Skip to main content
Editing a short answer - math & science question by WIRIS
You have permission to :
Edit this question
General
Category
Default for System (16649)
Test-Lidia
Question name
Question text
<font size="4"><span style="font-family: times new roman,times,serif;"><span style="font-family: times new roman,times,serif; font-style: italic;">Determina la ecuación principal de la recta que pasa por los puntos </span></span></font><font size="4"><span style="font-family: times new roman,times,serif;"><span style="font-family: times new roman,times,serif; font-style: italic;"><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#P1«/mi»«mo»§nbsp;«/mo»«mi»y«/mi»«mo»§nbsp;«/mo»«mi»#P2«/mi»«/math»</span></span></span></font> <font size="4"><span style="font-style: italic;"><span style="font-family: times new roman,times,serif;">y que está representada por la siguiente gráfica:</span></span></font><br style="font-family: times new roman,times,serif; font-style: italic;" /> <div style="text-align: center;"><font size="4"><span style="font-family: times new roman,times,serif;"></span></font>#dib<br /></div><br /><br /><br />
Default mark
General feedback
<font size="4"><span style="font-family: times new roman,times,serif;"><font size="4" style="font-style: italic;">Solución:<br /><br />Utilizaremos la ecuación punto-punto: <br /><br /></font><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»y«/mi»«mo»-«/mo»«msub»«mi»y«/mi»«mn»1«/mn»«/msub»«mo»=«/mo»«mfrac»«mrow»«msub»«mi»y«/mi»«mn»2«/mn»«/msub»«mo»-«/mo»«msub»«mi»y«/mi»«mn»1«/mn»«/msub»«/mrow»«mrow»«msub»«mi»x«/mi»«mn»2«/mn»«/msub»«mo»-«/mo»«msub»«mi»x«/mi»«mn»1«/mn»«/msub»«/mrow»«/mfrac»«mo»·«/mo»«mo»(«/mo»«mi»x«/mi»«mo»-«/mo»«msub»«mi»x«/mi»«mn»1«/mn»«/msub»«mo»)«/mo»«/math»</span> ; <font size="4" style="font-style: italic;">donde </font><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»(«/mo»«msub»«mi»x«/mi»«mn»1«/mn»«/msub»«mo»,«/mo»«msub»«mi»y«/mi»«mn»1«/mn»«/msub»«mo»)«/mo»«mo»=«/mo»«mi»#P1«/mi»«mo»§nbsp;«/mo»«mo»§nbsp;«/mo»«mo»§nbsp;«/mo»«mo»§nbsp;«/mo»«mi»y«/mi»«mo»§nbsp;«/mo»«mo»§nbsp;«/mo»«mo»§nbsp;«/mo»«mo»(«/mo»«msub»«mi»x«/mi»«mn»2«/mn»«/msub»«mo»,«/mo»«msub»«mi»y«/mi»«mn»2«/mn»«/msub»«mo»)«/mo»«mo»=«/mo»«mi»#P2«/mi»«/math»</span><br /><span style="font-style: italic;">para determinar la ecuación principal de la recta. </span><br /><br /></span></font> <table style="width: 689px; height: 170px;" border="1"><tbody> <tr> <td width="100%" valign="top"><span style="font-style: italic;"><font size="4"><span style="font-family: times new roman,times,serif;"><font size="4">Recuerda que</font> </span></font></span><font size="4"><span style="font-family: times new roman,times,serif;"><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfrac»«mrow»«mi»y«/mi»«mn»2«/mn»«mo»-«/mo»«mi»y«/mi»«mn»1«/mn»«/mrow»«mrow»«mi»x«/mi»«mn»2«/mn»«mo»-«/mo»«mi»x«/mi»«mn»1«/mn»«/mrow»«/mfrac»«/math»</span></span></font>, <font size="4"><span style="font-style: italic;"><span style="font-family: times new roman,times,serif;">corresponde a la pendiente de la recta </span></span></font><font size="4"><span style="font-style: italic;"><span style="font-family: times new roman,times,serif;">(m)</span></span></font><span style="font-style: italic;"><span style="font-family: times new roman,times,serif;">. P<font size="4" style="font-style: italic;">ara nuestro caso </font></span></span><font size="4" style="font-style: italic;"><span style="font-family: times new roman,times,serif;"></span> </font><br /> <div style="text-align: center;"><font size="4"><span style="font-family: times new roman,times,serif;"><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mtable columnalign=¨left¨ rowspacing=¨0¨»«mtr»«mtd»«mi»m«/mi»«mo»=«/mo»«mfrac»«mrow»«mi»#y2«/mi»«mo»-«/mo»«mi»#y1«/mi»«/mrow»«mrow»«mi»#x2«/mi»«mo»-«/mo»«mi»#x1«/mi»«/mrow»«/mfrac»«mo»=«/mo»«mfrac»«mrow»«mi»#r2«/mi»«/mrow»«mrow»«mi»#r3«/mi»«/mrow»«/mfrac»«/mtd»«/mtr»«mtr»«mtd»«mi»m«/mi»«mo»=«/mo»«mi»#m1«/mi»«/mtd»«/mtr»«/mtable»«/math»</span></span></font><br /></div> </td> </tr></tbody> </table><font size="4"><span style="font-family: times new roman,times,serif;"><br /><span style="font-style: italic;">Reemplazando cualquiera de los puntos <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#P1«/mi»«/math»</span> o <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#P2«/mi»«/math»</span> en la fórmula </span>(<span style="font-style: italic;">en este caso reemplazaremos</span></span></font><font size="4"><span style="font-family: times new roman,times,serif;"><span style="font-style: italic;"> <span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#P1«/mi»«/math»</span></span>)</span></font><font size="4"><span style="font-family: times new roman,times,serif;"><span style="font-style: italic;">, tenemos que:<br /><br /></span><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»y«/mi»«mo»-«/mo»«mi»#y1«/mi»«mo»=«/mo»«mi»#m1«/mi»«mo»·«/mo»«mo»(«/mo»«mi»x«/mi»«mo»-«/mo»«mi»#x1«/mi»«mo»)«/mo»«/math»</span></span></font><br /><span style="font-style: italic;"><span style="font-family: times new roman,times,serif;"></span></span><font size="4"><span style="font-family: times new roman,times,serif;"><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#r1«/mi»«mo»=«/mo»«mi»#m1«/mi»«mo»·«/mo»«mo»(«/mo»«mi»#r4«/mi»«mo»)«/mo»«/math»</span></span></font> <span style="font-style: italic;"><span style="font-family: times new roman,times,serif;">/<font size="4"> desarrollando la multiplicación de la derecha</font></span></span><font size="4"><span style="font-style: italic;"><span style="font-family: times new roman,times,serif;"> obtenemos:</span></span></font><br /><font size="4"><span style="font-family: times new roman,times,serif;"></span></font><font size="4"><span style="font-family: times new roman,times,serif;"></span></font><font size="4"><span style="font-family: times new roman,times,serif;"></span></font><font size="4"><span style="font-family: times new roman,times,serif;"><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#r1«/mi»«mo»=«/mo»«mi»#r5«/mi»«mo»+«/mo»«mi»#r8«/mi»«/math»</span></span></font> <span style="font-style: italic;"><span style="font-family: times new roman,times,serif;">/</span></span> <font size="4"><span style="font-style: italic;"><span style="font-family: times new roman,times,serif;">despejando la variable "y" </span></span></font><font size="4"><span style="font-style: italic;"><span style="font-family: times new roman,times,serif;">obtenemos:</span></span></font><br /><font size="4"><span style="font-family: times new roman,times,serif;"></span></font><font size="4"><span style="font-family: times new roman,times,serif;"><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»y«/mi»«mo»=«/mo»«mi»#r5«/mi»«mi»#c7«/mi»«mi»#r7«/mi»«/math»</span></span></font><font size="4"><span style="font-family: times new roman,times,serif;"><br /><br /><span style="font-style: italic;">Por lo tanto, la ecuación principal de la recta que pasa por los puntos <span style="font-weight: bold;">#P1 y #P2 </span>es:<br /><br /></span> </span></font> <div style="text-align: center;"><font size="4"><span style="font-family: times new roman,times,serif;"><font size="5"><span class="nolink">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»#L1«/mi»«/math»</span></font></span></font><br /></div><font size="4"><span style="font-family: times new roman,times,serif;"></span></font><br /><br /><font size="4"><span style="font-family: times new roman,times,serif;"></span></font><font size="4"><span style="font-family: times new roman,times,serif;"></span></font><font size="4"><span style="font-family: times new roman,times,serif;"></span></font>
No, case is unimportant
Yes, case must match
Correct answers
You must provide at least one possible answer. The first matching answer will be used to determine the score and feedback. Click the icon next to the answer field to edit the mathematical properties of the answer and the question.
Answer 1
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
Feedback
<font size="4" style="font-style: italic;"><span style="font-family: times new roman,times,serif;">Bien. Continúa de esta manera.</span></font>
Answer 2
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
Feedback
<font size="4" style="font-style: italic;"><span style="font-family: times new roman,times,serif;">Revisa el desarrollo para identificar tus errores. ¡Tú puedes! </span></font>
Answer 3
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
Feedback
Settings for multiple tries
Penalty for each incorrect try
100%
50%
33.33333%
25%
20%
10%
0%
Hint 1
Hint text
Hint 2
Hint text
Created / last saved
Created
by
Admin User
on
Tuesday, 17 September 2013, 9:51 AM
Last saved
by
Admin User
on
Tuesday, 17 September 2013, 9:51 AM
There are required fields in this form marked
.