AnswersAZ-Algebra 1A MA101Writing Linear Equations

Writing Linear Equations — Unit test Answers

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Which statement is true about the graphs of the two lines y = –6 and x = ?

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A
The lines are perpendicular to each other because the graph of y = –6 is a horizontal line with a slope that is undefined, and the graph of x = is a vertical line with a slope of 0.
Option A
B
The lines are perpendicular to each other because the graph of y = –6 is a vertical line with a slope that is undefined, and the graph of x = is a horizontal line with a slope of 0.
Option B
C
The lines are perpendicular to each other because the graph of y = –6 is a vertical line with a slope of 0, and the graph of x = is a horizontal line with a slope that is undefined.
Option C
D
The lines are perpendicular to each other because the graph of y = –6 is a horizontal line with a slope of 0, and the graph of x = is a vertical line with a slope that is undefined.
Option D
2
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Which statement is true about the graphs of the two lines y = x + 2 and y = x ?

Question illustration
A
The lines are perpendicular to each other because and are opposite reciprocals of each other.
Option A
B
The lines are perpendicular to each other because 2 and are opposite reciprocals of each other.
Option B
C
The lines are neither parallel nor perpendicular to each other because and are not opposite reciprocals of each other.
Option C
D
The lines are neither parallel nor perpendicular to each other because 2 and are not opposite reciprocals of each other.
Option D
3

What is the equation of the line that is perpendicular to the line and passes through the point (15,-5)?

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Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
4

Question text not available

Question illustration
A
Yes, because both lines have a slope of .
Option A
B
Yes, because both lines have a slope of .
Option B
C
No, because the slopes of the lines are not equal.
D
No, because the slopes of the lines are not opposite reciprocals of each other.
5

Question text not available

Question illustration
A
No, the triangle has no right angles.
B
Yes, the right angle is angle A.
C
Yes, the right angle is angle B.
D
Yes, the right angle is angle C.
6

What is the slope of a line that is perpendicular to the line y = x + 5?

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A
–2
B
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Option B
C
Option
Option C
D
2
7

What is the slope-intercept form of the equation of the line that passes through the point (–6, 1) and is perpendicular to the graph of 2x + 3y = –5?

A
y = x – 8
Option A
B
y = x + 1
Option B
C
y = x + 1
Option C
D
y = x + 10
Option D
8

What is the slope of a line that is perpendicular to the line 2y – 3x = 8?

A
–3
B
Option
Option B
C
Option
Option C
D
Option
Option D
9

What is the slope of a line that is parallel to the line y = ?

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A
Option
Option A
B
0
C
5
D
undefined
10

Question text not available

Question illustration
A
Yes, because the slope of is and the slope of is .
Option A
B
Yes, because the slope of is and the slope of is .
Option B
C
No, because the slope of is and the slope of is .
Option C
D
No, because the slope of is and the slope of is .
Option D

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