Unit 12 Functions Test

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by Lara Applegarth

| 11 QuestionsNote from the author:

contest

1

1 pt

The graph of a proportional relationship is shown.

What is the amount of savings per week?

2

1 pt

Several functions represent different savings account plans. Which functions are linear?

3

1 pt

Which graph represents a linear function increasing at a constant rate?

4

1 pt

Two collinear points are given in the table. Give a third point that is also on this line. Please make sure your answer is written so I can read it ..... typing is generally too small for me to see.

5

1 pt

The cost, C, to rent a car for d days is shown in the table. Write an equation that represents this function.

6

1 pt

The graph of a proportional relationship and an equation are shown.

Which one has the smaller unit rate? Justify your answer.

7

1 pt

The function y = 3.50x + 2 represents the total amount of money, y, saved over x weeks. What is true about the function?

It is linear because it is always increasing.

It is linear because it increases at a constant rate.

It is nonlinear because it is always increasing.

It is nonlinear because it increases at a constant rate.

8

1 pt

Mary and Kim each take 15 minutes to ride their bikes to school. The graphs of the functions that model their rides are shown, where x is the time, in minutes, and y is the distance, in miles.

The graphs are divided into time intervals A, B, C. Use the graphs to match each statement with the appropriate person or people.

Mary rode her bike fastest in Interval A, as compared to the rest of her ride.

Kim rode her bike fastest in Interval A, as compared to the rest of her ride.

Mary stopped for an interval of time.

Kim stopped for an interval of time.

Mary rode slower in Interval C than in Interval B.

Kim rode slower in Interval C than in Interval B.

Mary lives 0.7 miles from school.

Kim lives 0.7 miles from school.

9

1 pt

Give the steps for graph an equation in slope intercept form.

- Graph the y-intercept on the y-axis.
- Apply the slope from the y-intercept.
- Make sure the equation is solved for y.
- Draw a straight line.

10

1 pt

Graph the equation

11

1 pt

- The y-intercept is zero.
- The y-intercept is anything except zeo.
- Has a constant rate of change.

- Proportional
- Nonproportional

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