Question

What does x=-3 y=2x+1 equal

Answer 1

If x =-3 that means the equation becomes
Y=2(-3) +1 and when you simplify you get
Y=-5 hope this helps :)

Answer 2

it is a y intercept form? this means that if you plug in -3 for x you will get a value on the right side that is equal to y!