Question

What is the axis of symmetry for the function? y = x2 + 3x - 4
A. y = -2
B. y = -1.5
C. x = -2
D. x = -1.5

Answer 1

y'=2x+3=0, or x=-3/2, or D.

Answer 2

If your equation is in standard form, then the formula for the axis of symmetry is:
x = -b/2a from the general standard form equation y = ax2+bx + c
http://www.mathwarehouse.com/geometry/parabola/axis-of-symmetry.php

Answer 3

Look at you, being helpful and all.

Answer 4

THanks. I try my best to work in a team.