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The range of a relation is the domain of the inverse

of the relation. The statement is false.

ANSWER:

Study Guide and Review - Chapter 4

false, domain

State whether each sentence is true or false . If

Write an equation of a line in slope-intercept

form with the given slope and y-intercept. Then

false , replace the underlined term to make a

graph the equation.

true sentence.

10. slope: 3, y-intercept: 5

2. The process of using a linear equation to make

predictions about values that are beyond the range of

SOLUTION:

the data is called linear regression.

The slope-intercept form of a line is y = mx + b,

SOLUTION:

where m is the slope, and b is the y-intercept.

The statement is false. The process of using a linear

equation to make predictions about values that are

beyond the range of the data is called linear

extrapolation. Linear regression is an algorithm to

find a precise line of fit for a set of data.

To graph the equation, plot the y-intercept (0, 5).

ANSWER:

Then move down 3 units and left 1 unit. Plot the

point. Draw a line through the two points.

false, linear extrapolation

4. The correlation coefficient describes whether the

correlation between the variables is positive or

negative and how closely the regression equation is

modeling the data.

SOLUTION:

The correlation coefficient describes whether the

correlation between the variables is positive or

negative and how closely the equation is modeling the

data. So, the statement is true.

ANSWER:

ANSWER:

true

y = 3x + 5

6. Lines that intersect at acute angles are called

perpendicular lines.

SOLUTION:

The statement is false. Lines that intersect at right

angles are called perpendicular lines. Acute angles

have measures less than 90.

ANSWER:

false, right

8. The range of a relation is the range of its inverse

function.

12. slope:

, y-intercept: 3

SOLUTION:

The range of a relation is the domain of the inverse

SOLUTION:

of the relation. The statement is false.

The slope-intercept form of a line is y = mx + b,

ANSWER:

is the y -intercept.

where m is the slope, and b

false, domain

Write an equation of a line in slope-intercept

form with the given slope and y-intercept. Then

graph the equation.

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Page 1

10. slope: 3, y-intercept: 5

To graph the equation, plot the y-intercept (0, 3).

SOLUTION:

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