Question

What is the x-coordinate of the vertex of the parabola whose equation is y = 3x2 + 9x?


a.) -3
b.) -1 1/2
c.) -2/3

Answer 1

This should be in Math.

Answer 2

\(\Huge\color{green}{Welcome~ to~ openstudy!}\)
@mcclanlac you might not have noticed but you are in the wrong section..go to math for better help..if you need the link tell me :)

Answer 3

Derivative (tangent) is 6x + 9 equal to 0 at vertex (turning point) so x = -3/2. so C