Question

Solve the system of equations by the substitution method.



Choose one answer.
a. (3, -4)
b. (-4, 3)
c. (-3, 2)
d. no solution

Answer 1

The answer is (-4, 3) or solution B. If you don't know how to solve questions like these an d you need help, I would be happy.

Answer 2

solve eqn 1 for y:
y=-7x-25
substitute this expression for y into eqn 2:
6x+3y=6x+3(-7x-25)=-15
-15x-75=-15
x=-4
sub back this value for x back into our expression foy y:
y=-7x-25=-7(-4)-25=3
x=-4 y=3 Solution B