Proportional Equations

Proportional Representations: Equations

​y=_x

Proportional equations are in this format.
The blank is filled with the constant of proportionality - the number we multiply the x by to find out the y.

Multiple Choice

Which is not a proportional equation?

• y=3x

• y=1/4x

• y=x

• y=4x+6

Multiple Choice

Which is not a proportional equation?

• y = 5x

• y = 5 + x

• y =1/9x

• m = 7b

Filling in the blank

The COP (constant of proportionality) is found by dividing y by x

​Constant of Proportionality

​Write an equation to represent the table.

Fill in the Blanks

Write an equation to represent the table

Fill in the Blanks

Write an equation to represent the table. Use a decimal - not a fraction for the constant of proportionality.

​Graphs

Fill in the Blanks

Write the equation that represents the graph

Fill in the Blanks

Write the equation that represents the graph

​Word Problems

​Ally can eat 4 slices of pizza in 9 minutes. Write an equation to represent how much time, x, it takes her to eat y pizza slices.

Fill in the Blanks

Brianna can read 80 pages of her book in 16 minutes. Write an equation to represent how many pages, y, she can read in x minutes.

Fill in the Blanks

The ice cream shop sells 3 cones for every 5 ice cream scoops. Write an equation that shows the relationship between cones, x , and ice cream scoops, y.

*Use a fraction - not a decimal