Proportional Equations from Tables and Graphs

What is the y - intercept?

• 0

• 5

• - 4

• 4

Given these two ordered pairs, write the equation.
(2, 8) (3, 12)

• y = 4x + 8

• y = x + 4

• y = 4x + 4

• y = 4x

Which of the following tables represents a proportional relationship?

• 
• 
• 
• 

Which of the following represents the constant of proportionality in the table?

• k = 85

• k = 95

• k = 190

• k = 125

The table below shows the relationship between the number of miles traveled, x, and the number of gallons of gas used, y. Which of the following equations best represents the relationship?

• 35 = 1x

• y = 35x

• y = 3.5x

Is there a proportional relationship between x and y?

• YES

• NO

The table shows the relationship between the number of miles traveled, y, and the number of gallons of gas used, x.

Which of the following equations best represents the relationship?

• y = 7.6x

• y = 0.013x

• y = 684x

• y = 76x

The graph shows the amount of money that Janice saves each week from her summer job. Which best represents the unit rate?

• (0 , 0)

• (1, 200)

• (200, 1)

• (2, 200)

The table represents some points on a linear function. Which situation can be modeled by this function?

• The cost of buying 1 pair of shoes for $84.

• The cost of using 1 gallon of gas for $76.

• The cost of buying 5 pairs of shoes for $76.

• The cost of purchasing 11 pairs of shoes for $228.

Jermaine plots the points (0, 0) and (4, 11) on a graph to represent a proportional relationship. Which of the following equations represents the relationship between the x and y-values?