Understanding the Constant of Proportionality

Understanding the Constant of Proportionality

Assessment

Interactive Video

Mathematics

5th - 8th Grade

Hard

CCSS
7.RP.A.2B, RI.5.7, RL.7.7

+8

Standards-aligned

Created by

Liam Anderson

FREE Resource

Standards-aligned

CCSS.7.RP.A.2B
,
CCSS.RI.5.7
,
CCSS.RL.7.7
CCSS.7.RP.A.2D
,
CCSS.6.RP.A.1
,
CCSS.6.RP.A.2
,
CCSS.RL.8.7
,
CCSS.RL.5.7
,
CCSS.RL.6.7
,
CCSS.RI.6.7
,
CCSS.RI.7.7
,
The video tutorial explains how to find the constant of proportionality from graphs, which is the rate at which a graph changes. It introduces the concept using examples, such as ticket costs and walking rates, and explains how to calculate it as a unit rate or slope. The tutorial also includes a practice problem on converting feet and yards.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the constant of proportionality often referred to as?

Slope

Vertex

Axis

Intercept

Tags

CCSS.7.RP.A.2B

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in finding the constant of proportionality from a graph?

Pick a point on the graph

Identify the y-intercept

Find the midpoint of the line

Calculate the area under the curve

Tags

CCSS.7.RP.A.2D

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the context of graphs, what does a straight line passing through the origin indicate?

Exponential relationship

Quadratic relationship

Proportional relationship

Non-proportional relationship

Tags

CCSS.7.RP.A.2B

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which point is used in the example to find the constant of proportionality?

(4, 120)

(2, 61)

(3, 90)

(1, 30)

Tags

CCSS.7.RP.A.2B

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you calculate the constant of proportionality from a graph?

Divide y by x

Multiply x and y values

Add x and y values

Subtract x from y

Tags

CCSS.7.RP.A.2B

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the constant of proportionality in the example with the unlabeled graph?

2

1

4

3

Tags

CCSS.7.RP.A.2B

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example of Mrs. Johnston's walking rate, what is the constant of proportionality?

3.0

1.5

2.0

2.5

Tags

CCSS.7.RP.A.2B

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