Question

What is the y-value of the solution to the system of equations shown below

y=2x - 6
y=5x - 21

A. 9
B. 4
C. 12
D. 5​

Answer 1

first you have to get x
5x-21=2x-6
3x=15
x=5

then substitute in any of the equations with x to get the y value:
y=2x-6
y=2(5)-6
y=4

so the answer is choice B

hope this helps !