Staar Quadratic Functions

Identify the function graphed here.

What is the y-intercept of this parabola?

• (6, 0)

• (-2, 0)

• (-4, -2)

• (0, 6)

Let the graph of g be a translation 2 units down and 4 units left of the graph of f(x) = x². Write a rule for g.

• g(x) = (x - 4)² - 2

• g(x) = (x + 4)² - 2

• g(x) = (x - 4)² + 2

• g(x) = (x + 4)² + 2

Let the graph of g be a translation 7 units right and a reflection of the graph of f(x) = x². Write a rule for g.

• g(x) = -(x - 7)²

• g(x) = (x - 7)²

• g(x) = -(x + 7)²

• g(x) = (x + 7)²

Let the graph of g be a translation 7 units right and 12 units up of the graph of f(x) = (x + 3)² - 8. Write a rule for g.

• g(x) = (x - 4)² + 4

• g(x) = (x + 10)² + 4

• g(x) = (x - 4)² - 20

• g(x) = (x + 10)² - 20

Which of the following is a quadratic function that has a vertex at (2, -7) and opens up?

Which of the following is a quadratic function that has a vertex at (0, 10) and opens down?

Does this graph in the back have maximum or minimum value?

• maximum

• minimum

• neither

• both

Which equation best represents the graph?

• y = 2(x - 4)² + 5

• y = 2(x + 4)² + 5

• y = -2(x - 4)² + 5

• y = -2(x + 4)² + 5

The solutions of a quadratic equation are known as the _____.

• Vertices

• Roots

• Squares

• Formulas