EOC Review Part II 24

The table defines a quadratic function.

What is the average rate of change between x = -1 and x = 1?

• undefined

• -1/3

• -3

• -4

• f(x) = (x + 4)(x + 2)

• f(x) = (x + 3)(x + 5)

• f(x) = (x + 2)(x + 6)

• f(x) = (x + 1)(x + 15)

• f(x) = (x + 4)² - 1

• f(x) = (x + 3)²

• f(x) = (x + 2)² + 3

• f(x) = (x + 1)² + 8

• up

• down

• increasing

• decreasing

• (-4, 0)

• (4, 0)

• (0, -4)

• (0, 4)

The graph of the function y = 0.5x² + x - 7.5 is shown.

Where is the axis of symmetry?

• x = -7

• x = -5

• x = -1

• x = 3

The linear function f(x) is graphed on the coordinate grid.

Which two points would be on the linear function g(x) = f(x) + 3

• (3, 3) and (1, 3)

• (3, 3) and (-3, 6)

• (3, 3) and (-3, -1)

• (3, 3) and (6, 2)