Unit 4 Test Review

• 2

• 6

• 7

• -1

The Graph shows a function. Which of the following is in the range of the function?

• -5

• 2

• 7

• 10

Answer explanation

To find the range on a graph - look where the graphs falls on the y-axis.

As seen on the left - the range for this graph would be all the y value between 5 and -5.

You read the graph up and down.

The table below shows y as a function of x. Which of the following is the average rate of change of the function from x = 2 to x = 6?

Answer explanation

Remeber how to find the average rate of change on a graph!

See image!

When born, a baby weighed 8,5 pounds and gained 1.6 pounds per week for the first 10 weeks. Which of the following functions accurately models the number of pounds, p, the baby weighs as a function of the number of weeks, w, since it was born?

Answer explanation

Plese see table on the left to look at common words associated with linear functions. These will help you write a linear equation.

The shoe sizes and heights for 20 classmates were plotted as ordered pairs on a scatter plot. A line of best fit was drawn to model the data. Which scatter plot shows the most accurate line of beest fit?

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Which table below could represent a linear function?

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The graph of a function is shown on the coordinate plane to the left.

Between which two values of x is the function nonlinear and increasing?

• -5 and -3

• -3 and 1

• 1 and 4

• 4 and 6

A scatter plot is shown.

Which statement BEST explains why these data points can or cannot be modeled using a line of best fit?

• A line would not be apporopriate because there is a negative association

• A line would not be appropriate because the points follow a nonlinear pattern.

• A line would be appropriate because there is a positive association.

• A line would be appropriate becuase the points follow a nonlinear pattern.

For the graph of the function shown, find the output if the input is x = 0?

• -4

• -8

• 8

• 9

Find the averate rate of change of the function between x = 0 and x =6.

• -2

• 2

Answer explanation

See graphic to review how to find average rate of change on a graph.