Quadratic Functions Labeling

The graph of quadratic function k is shown on the grid. Which statements are best supported by the graph of k? I. The x-intercept is located at (-3, 0) II. The coordinates of the y-intercept are (0,9). III. The axis of symmetry is x = -3.

• I and II only

• I and III only

• II and III only

• I, II, and III

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 be best used to model this situation?

The scatterplot and table show the weekly profit in dollars earned from the sale of pastries at seven different prices. The data can be modeled by a quadratic function.

Which function best models the data?

Label the quadratic function.

a

b

c

d

Minimum, vertex

Axis of Symmetry

Zeros, Roots, Solutions

Y-Intercept

A diver is standing on a platform above the pool. He jumps form the platform with an initial upward velocity of 8 ft/s. Use the formula: h(t) = −16 t² + 8t + 24

How high is the platform?

• .25 ft

• 24 ft

• 25 ft

• 8 ft

What does "a" control in a graph of f(x) = ax²+ bx+ c?

• Opens up or down

• Where the graph crosses at X-intercept

• Where the graph crosses at Y-intercept

Which form is the equation
y = -3(x-5)²+7 in?

• Standard

• Vertex

• Factored

• None of These

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

y = x² - 4x + 5

• down and down

• down and up

• up and down

• up and up