Question

Find the equation of the axis of symmetry for the parabola y = x2 – 3x.

Answer 1

Explanation:

y=x²-3x=x²-3x+(-3/2)²-(-3/2)²

or y=(x-3/2)²-9/4

axis of symmetry is x-3/2=0

or x=3/2

Answer 2

x = 3/2

Explanation:

The formula is x = -b/(2a)

so x = -(-3)/2 = 3/2