Answers2025-2026_MDCPS_1205070-MJ Grade 8 Pre-Algebra Sem 1-CRInterpreting Graphs

Interpreting Graphs Answers

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1
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Which is the best description for the graph below?

Question illustration
A
The graph increases everywhere.
B
The graph decreases everywhere.
C
The graph remains constant.
D
The graph increases, then decreases.
2
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A line graph in the coordinate plane that has no breaks in it is

A
a qualitative graph.
B
a continuous graph.
C
a discrete graph.
D
a cosmograph.
3

How does the graph change between point A and point B?

Question illustration
A
The graph increases.
B
The graph decreases.
C
The graph remains constant.
D
The graph increases, then decreases.
4

Which is a qualitative graph?

A
On a coordinate plane, a line with positive slope goes through points (negative 1, 0) and (0, 3).
Option A
B
On a coordinate plane, points are at (0, 2), (1, 3), (2, 2.5), (3, 3), (4, 4), and (4.5, 5).
Option B
C
A graph has time on the x-axis and height on the y-axis. The graph increases to point A, increases to point B, and then decreases to point C.
Option C
D
A graph has time on the x-axis and height on the y-axis. Segment A increases, segment B is increases, and segment C decreases.
Option D
5

The height of a hot air balloon is tracked as it makes its trip from launch to the landing site. Look at the graph to determine what is happening at each labeled segment of the graph.Which label corresponds to the segment showing the balloon descending but not landing?

Question illustration
A
A
B
B
C
C
D
D
6

When Jules loses a golf ball he takes another from the box. Which graph models this relationship?

A
A graph has golf balls lost on the x-axis and gold balls in box on the y-axis. A line with positive slope is on the graph.
Option A
B
A graph has golf balls lost on the x-axis and gold balls in box on the y-axis. A line with negative slope is on the graph.
Option B
C
A graph has golf balls lost on the x-axis and gold balls in box on the y-axis. Points form a line with positive slope.
Option C
D
A graph has golf balls lost on the x-axis and gold balls in box on the y-axis. Points form a line with negative slope.
Option D
7

A graph in visual form that expresses the important characteristics of a situation and does not necessarily have numerical values is

A
a qualitative graph.
B
a discrete graph.
C
a continuous graph.
D
a cosmograph.
8

A graph that has a finite or limited number of data points is

A
a discrete graph.
B
a qualitative graph.
C
a continuous graph.
D
a cosmograph.
9

On the way to her babysitting job, Mary rode her bike for the first mile. She stopped at a traffic light and waited a few minutes for the traffic light to turn green. She then walked her bike across the street and up a short steep hill. Finally, she rode the bike at a constant speed for one more mile. If Mary created a graph of her time and distance, which statement describes the part of her graph that would show no change in distance?

A
Mary used her bike to ride the first mile.
B
Mary stopped and waited for the traffic light to turn green.
C
Mary walked her bike across the avenue and up a short hill.
D
Mary rode her bike at a constant speed for one mile.
10

Which table represents the graph below?

Question illustration
A
A 2-column table with 6 rows. Column 1 is labeled x with entries 0, 1, 2, 3, 4, 5. Column 2 is labeled y = 2 x minus 3 with entries negative 3, negative 1, 1, 3, 5, 7.
Option A
B
A 2-column table with 6 rows. Column 1 is labeled x with entries 0, 1, 2, 3, 4, 5. Column 2 is labeled y = 2 x minus 3 with entries negative 3, 1, negative 1, 3, 5, 7.
Option B
C
A 2-column table with 6 rows. Column 1 is labeled x with entries 0, 1, 2, 3, 4, 5. Column 2 is labeled y = 2 x minus 3 with entries negative 3, negative 1, 0, 3, 5, 7.
Option C
D
A 2-column table with 6 rows. Column 1 is labeled x with entries negative 3, negative 1, 1, 3, 4, 7. Column 2 is labeled y = 2 x minus 3 with entries 0, 1, 2, 3, 4, 5.
Option D
11

Sue graphed the formula for converting temperatures from Fahrenheit to Celsius.If the temperature is 50 degrees Fahrenheit, what is the temperature in Celsius?

Question illustration
A
5 degrees Celsius
B
10 degrees Celsius
C
15 degrees Celsius
D
20 degrees Celsius
12

How does this graph change between point D and point G?

Question illustration
A
The graph increases.
B
The graph decreases.
C
The graph increases, then decreases.
D
The graph remains constant.
13

The table represents the cost of flowers at the Tigerlily Flower Shop.Cost of FlowersQuantityPrice1$2.002$3.503$5.004$6.505$8.006$9.00Which graph is the best interpretation of this table?

A
On a coordinate plane, the x-axis is labeled Quantity and the y-axis is labeled price. Points are at (1, 2), (2, 3.5), (3, 5), (4, 6.5), (5, 8), (6, 9).
Option A
B
On a coordinate plane, the x-axis is labeled Quantity and the y-axis is labeled price. Points are at (1, 2), (2, 4), (3, 6), (4, 8), (5, 10), (6, 12).
Option B
C
On a coordinate plane, the x-axis is labeled Quantity and the y-axis is labeled price. A line with positive slope goes through points (2, 4) and (4, 8).
Option C
D
On a coordinate plane, the x-axis is labeled Quantity and the y-axis is labeled price. A curved line with positive slope is on the graph.
Option D
14

How does the graph change from point G to point K?

Question illustration
A
The graph increases.
B
The graph decreases, then increases.
C
The graph remains constant.
D
The graph increases, then decreases.
15

Which is the best type of graph to model the speed of a roller coaster over the full two minutes it takes to complete the ride?

A
a qualitative graph
B
a discrete graph
C
a bar graph
D
a histogram
16

Miguel used the graph below to convert temperatures in degrees Fahrenheit (F) to Celsius (C).The graph shows that as F increases, C ________.

Question illustration
A
decreases
B
increases
C
is constant
D
increases then decreases
17

William is in the middle of swimming in a ten-mile race. He swims at a steady speed, and then slows down, stops to eat, swims faster to get back in the race, and returns to a steady speed. He slows down again, stops for water, and then again swims faster to get back in the race. Which graph best represents the situation?

A
A graph with time on the x-axis and speed on the y-axis. The graph is constant, decreases to 0, increases, is constant, decreases to 0, and then increases.
Option A
B
A graph with time on the x-axis and speed on the y-axis. The graph decreases, is constant at 0, increases, is constant, decreases to 0, and then increases.
Option B
C
A graph with time on the x-axis and speed on the y-axis. The graph is constant, decreases to 0, is constant, increases, decreases to 0, and then increases.
Option C
D
A graph with time on the x-axis and speed on the y-axis. The graph is constant, decreases to 0, is constant, increases, and then is constant.
Option D

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