Question

can i post a picture of a problem my teacher gave me and see if you think its right?, i believe its wrong and he has gotten problems wrong in the past

Answer 1

sure man, let the problem be solved

Answer 2

there is is, when he plugs y back into the equation is it right?

Answer 3

i think its correct. if you're talking about the y being -x then we would put the value for y^2 which will be (-x)*(-x)= x^2

Answer 4

okay, i see what you mean. thanks