The vertex of this parabola is (4, -12) what is the axis of symmerty?

Write the sentence as an equation. z plus 372 is equal to 160

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.