Question

Solve the system by the substitution method. Show your work.
2y - x = 5
x2 + y2 - 25 = 0

Answer 1

Solve for 'x' in the first equation, can you do that?

Answer 2

2y - x = 5

-x = 5 - 2y

x = 2y - 5

Now plug in 2y - 5 for 'x' in the 2nd equation and solve for 'y'.