Question

For 2x - 3y = -7, when x = 4, What is the value of y?
Choose one answer.
a.
b.
c. -5
d. 5

Answer 1

So to solve this, lets let x = 4 by replacing x with 4 everywhere in your equation:
\[2x-3y=-7 \Rightarrow 2(4)-3y=-7 \Rightarrow 8-3y=-7 \Rightarrow -3y = -15 \Rightarrow y = 5\]

Answer 2

"lets let".....sounds retarded >.<

Answer 3

if there are any steps in there that seem confusing, or like witchcraft, let me know, i'll explain :)