AnswersWI-Mathematics Grade 8 AUnit Test

Unit Test — Unit test Answers

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A line passes through the points (2, –2) and (–6, 2). The point (a, –4) is also on the line. What is the value of a?

Question illustration
–
–6
–
–1
1
1
6
6
2
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The linear equation when b = 5 and m = –2 is

y
y = 5x – 2.
y
y = 5x + 2.
y
y = –2x – 5.
y
y = –2x + 5.
3

x

6
6
1
11
1
16
4
48
4

Maricella plots two ordered pairs on the grid below. The line segment is extended to cross both axes. What is the location of the y-intercept on the line?

Question illustration
(
(0, –22)
(
(0, –10)
(
(0, –5)
(
(0, 5)
5

Sanjay said that if a line has a slope of zero, then it never touches the x-axis. Which line proves that his statement is incorrect?

x
x = 0
y
y = 0
x
x = 1
y
y = 1
6

A teacher presented students with four tables. Table 1Table 2Table 3Table 4Which table describes a linear function that has a slope of 2?

Question illustration
T
Table 1
T
Table 2
T
Table 3
T
Table 4
7

A toy airplane climbs 30 vertical feet while traveling 50 feet horizontally. A toy helicopter climbs 20 feet while traveling 40 feet horizontally. Assuming a steady rate of change, which toy traveled at a greater slope?

Question illustration
T
The airplane did, because .
Option T
T
The airplane did, because .
Option T
T
The helicopter did, because .
Option T
T
The helicopter did, because .
Option T
8

A line has a slope of and passes through the point (–5, 4). Which is the equation of the line?

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
9

What is the y-intercept of the linear equation ?

Question illustration
–
–6
–
–3
0
0
1
12
10

Nate went on a trip, and he used a table of values to repeatedly record the time he had been traveling and the distance from his starting point. The function represented by the table of values is linear, and the rate of change is 50 miles per hour. What is one way for Nate to determine the initial value?

B
By repeatedly adding 50.
B
By repeatedly subtracting 50.
B
By repeatedly multiplying by 50.
B
By repeatedly dividing by 50.
11

The Shake Shack sells large and small shakes. A large shake costs $5, and a small shake costs $3. On Sunday, the Shake Shack had a total revenue of $479. Which equation can be used to represent x, the number of small shakes sold and y, the number of large shakes sold?

4
479x + 479y = 15
4
4x + 4y = 479
5
5x + 3y = 479
3
3x + 5y = 479
12

Which equation represents a line with a slope of zero?

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
13

Both Andrew and Karleigh recorded the distance they ran in x minutes on treadmills.AndrewKarleighAndrew and Karleigh each run for 1 hour. Which statement explains who ran a greater distance?

Question illustration
A
Andrew ran a greater distance. The slope of the line described by the data in his table increased at a rate of mile per minute compared to Karleigh’s mile per minute.
Option A
K
Karleigh ran a greater distance. The slope of the line described by the data in her table increased at a rate of mile per minute compared to Andrew’s mile per minute.
Option K
K
Karleigh ran a greater distance. The slope of the line described by the data in her table increased at a rate of mile per minute compared to Andrew’s mile per minute.
Option K
A
Andrew ran a greater distance. The slope of the line described by the data in his table increased at a rate of mile per minute compared to Karleigh’s mile per minute.
Option A
14

The distance a baseball travels when a player hits the ball varies directly with the speed with which the player swings the bat. The graph below shows the distances a baseball travels (in feet) and the speed of the swing (in miles per hour). Based on the graph, which relationship exists between the speed of the swing and the distance the ball travels?

Question illustration
T
The distance is 0.1 times the swing speed.
T
The distance is 0.2 times the swing speed.
T
The distance is 5 times the swing speed.
T
The distance is 10 times the swing speed.
15

Which equation represents the linear function that is shown on the graph below?

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D

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