Quiz about Unit 7 Review

Question 1

The table represents some points on the graph of a quadratic function h. What is the range of h?

Accepted Answer

All real numbers less than or equal to 1.

Answer

All real numbers less than or equal to -1.

Answer

All real numbers greater than or equal to -1.

Answer

All real numbers greater than or equal to 1.

Question 2

Quadratic function c has a vertex of (3,12) and passes through the point (12,-15). Which equation represents c?

Accepted Answer

$$c\left(x\right)=-\frac{1}{3}\left(x-3\right)^2+12$$

Answer

$$c\left(x\right)=\frac{1}{3}\left(x-3\right)^2+12$$

Answer

$$c\left(x\right)=-\frac{1}{27}\left(x-3\right)^2-12$$

Answer

$$c\left(x\right)=\frac{1}{27}\left(x-3\right)^2-12$$

Question 3

What are the domain and range of the function $$g\left(x\right)=-2\left(x-4\right)^2+6$$ ? Select TWO correct answers.

Accepted Answer

Domain: All real numbers

Accepted Answer

Range: $$y\le6$$

Answer

Domain: $$x\ge4$$

Answer

Domain: $$y\le6$$

Answer

Range: $$x\ge4$$

Question 4

The graph shows the relationship between the profit made and the selling price of a homemade hat. Which function is best represented by the graph of the situation?

Accepted Answer

$$p\left(x\right)=-x^2+80x-700$$

Answer

$$p\left(x\right)=-x^2+80x$$

Answer

$$p\left(x\right)=-x^2-80x$$

Question 5

A quadratic function is graphed on the grid. Which answer choice best represents the domain and range of the function?

Accepted Answer

Domain: All real numbers

Range: $$y\ge-1$$

Answer

Domain: $$x\ge3$$

Range: $$y\ge-1$$

Answer

Domain: $$x\ge3$$

Range: All real numbers

Answer

Domain: $$y\ge-1$$

Range: $$x\ge3$$

Question 6

The graph of $$f\left(x\right)=x^2$$ is shown on the grid. Which statement about the relationship between the graph of f and the graph $$r\left(x\right)=\frac{1}{2}x^2$$ is true?

Accepted Answer

The graph of r is wider than the graph of f

Answer

The graph of r is narrower than the graph of f.

Answer

The graph of r is $$\frac{1}{2}$$ units below the graph of f.

Answer

The graph of r is $$\frac{1}{2}$$ units above the graph of f.

Question 7

The graph of quadratic function j is shown on the grid. Which statements are best supported by the graph j.

1. The x-intercepts are located at (1,0) and (3,0).
2. The coordinates of the y-intercept are (0,-3).
3. The axis of symmetry is x = 2.

Accepted Answer

1, 2, and 3

Answer

1 and 2 only

Answer

1 and 3 only

Answer

2 and 3 only

Unit 7 Review

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