

Constant of proportionality from a table
Presentation
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Standards-aligned
JUSTIN COTTON
Used 28+ times
FREE Resource
7 Slides • 3 Questions
1
I can write an equation of the form to represent a proportional relationship described by a table or a story.

2
This is the standard equation form for a proportional relationshiop
3
Multiple Choice
What does the k stand for in the equation?
constant of proportionality
unit rate
independent variable
dependent variable
4
A recipe says that 2 cups of dry rice will serve 6 people.
How many people will 1 cup of rice serve?
5
A recipe says that 2 cups of dry rice will serve 6 people. How many people will 12 cups of dry rice feed?
12 cups of dry rice will feed 36 people.
6
A recipe says that 2 cups of dry rice will serve 6 people.
So the constant of proportionality is 3 and the equation is y = 3x
7
Multiple Choice
A new recipe says that 6 spring rolls will feed 3 people. Which equation can be used to represent the relationship between people (y) and spring rolls (x)?
y = 2x
y = 1/2x
y = 3x
y = 1/3x
8
To create an equation from the table
divide the y's by the x's to find the constant of proportionality. y = 3x
9
Fill in the Blanks
Write the equation that could represent the table.
Type answer...
10
Today you will complete constant of proportionality from tables with equations) and writing proportional equations from tables
I can write an equation of the form to represent a proportional relationship described by a table or a story.

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