Question 1

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Question text

Per aquest sistema

open curly brackets table attributes columnalign left end attributes row cell 2 invisible times x plus 5 invisible times y equals 9 end cell row cell negative 2 invisible times x minus 3 invisible times y equals negative 3 end cell end table close


digues si aquests valors són solucions:
 

   x equals negative 3 comma space y equals 3

   x equals 1 comma space y equals negative 3

   x equals negative 1 comma space y equals 2

   x equals negative 3 comma space y equals negative 4

 

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