Question

What is the axis of symmetry for the graph of y = 3x^2 + 6x − 4?

x = 1

x = −1

x = 2

x = −2

Answer 1

@Nurali

Answer 2

Compare with the general quadratic equation

y = ax2 + bx + c.

Here, a = –3, b = –6, and c = 4.

Substitute a = –3 and b = –6 in the equation of axis of symmetry, x = – b/2a.

x = –1

The equation of axis of symmetry is x = –1.