C4 Station 5 Writing Quadratics

Which quadratic function in vertex form can be represented by the graph that has a vertex at (3, -7) and passes through the point (1, -10)?

• y = 0.75(x + 3)² + 7

• y = -0.75(x + 3)² - 7

• y = 0.75(x - 3)² + 7

• y = -0.75(x -3)² - 7

The graph of a quadratic function is shown on the grid. Which function is best represented by this graph?

• f(x) = x² + 3x + 4

• f(x) = -x² - 3x + 4

• f(x) = x² - 3x - 4

• f(x) = -x² + 3x + 4

A projectile is launched into the air from the ground. The table shows the height of the projectile, h(t), at different times.

Based on the table, which function can best be used to model this situation?

• h(t) = 99t² + 858

• h(t) = -4.9t² + 295t + 0.6

• h(t) = -4.9t² + 295t + 2

• h(t) = 99t² + 1,470.3

A quadratic equation has a vertex form of y = -2(x - 1)² - 2. Which of the following is equivalent to this form?

• y = 2x² - 4x + 4

• y = -2x² + 4x - 4

• y = -2x² - 4x + 4

• y = 2x² + 4x - 4

Given the zeros x=4 and x=-2, what is the quadratic equation?

• y=x² +6x -8

• y=x² +6x -8

• y=x² -2x -8

• y=x² -2x +8