Question

Y = x2 - 8x + 15
Axis of symmetry

Answer 1

15

Explanation:

Answer 2

Hello!

To calculate the axis of symmetry coordinates, you should use the following equation:

xa = -b/2a
ya = f(xa)

Then, let’s start with xa:
xa = -(-8)/2*1 = 8/2 = 4

ya = f(xa) = f(4) = (4)^2 - 8(4) + 15
f(4) = 16 - 32 + 15 = -1

So, the axis of symmetry coordinates are (4, -1).