Missing Value for Proportional Relationships

The equation y = 3x represents a proportional relationship. The value of y when x= 7 is __________

• 21

• 7

• 10

• 4

What is the constant of proportionality (in miles per hour) based on the table?

• 45

• 90

• 135

• 2

This is a table with a proportional relationship between A and B.  Find the missing value of B. 

Mathematical Equivalence

ON

Coco is packing kettle corn into bags for snacks. She knows that she packs 6.4 ounces into 4 bags. She creates the following table to find other values for the number of ounces packed to the number of bags used in the same proportion.
Using the first row, Coco ​ (a)   to find the missing value for the second row. If she uses the first row to find the value in the third row, Coco will ​ (b)   .

• divides by 4

• multiply by 2.25

• subtracts by 4

• multiplies by 4

• subtracts 2.25

• divide 2.25

What is the equation y=kx for the table?

• y=1/3x

• y=3x

• y=5x

• y=1/5x

The constant of proportionality in the equation y = ½x is _______. 

• x

• y

• 1/2

• 2

A proportional relationship can be written as an equation in the form
____ = _____  _____

• y = k+x

• y = k-x

• y = kx

• y = k/x

Write the equation for the table given.

• y = 16/2x

• y=8x

• y=12x

Write the equation for the table given

• y = 1/3x

• y = 3x

• y = 1/2x

What does k represent in the equation y = kx?

• independent variable

• constant of proportionality

• dependent variable

• krispy kreme