Question

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the first equation is substituted into the second equation.

8x - y = -9
4x - 3y = -22

4(-8x - 9) - 3y = -22

4x - 3(-8x - 9) = -22

4(8x + 9) - 3y = -22

4x - 3(8x + 9) = -22

Answer 1

b

Answer 2

they used the value of y from the above equation and put it in the second equation wherever there is an y. So that you have an equation with only x left, which is possible to solve.

Answer 3

thank you!