Question

Solve the system by substitution.
-4.5x-2y= -12.5
3.25x-y= -0.75

Answer 1

find either x or y (3.25x-y=-0.75)-->y=0.75+3.25x---->plug this into -4.5x-2(.75+3.25x)= -12.5...x=1. Use this x=1 plug back into y=0.75+3.25(1) to get y

Answer 2

???

Answer 3

Do you know how the method of substitution works?

Answer 4

not really this all is confusing

Answer 5

OK, the word "substitution" means you will be substituting or replacing one thing with another, right?

Answer 6

okay

Answer 7

Substitution Principle:
An expression may be replaced by another expression that has the same value.

Answer 8

So choose either equation and solve it for one variable.