Proportional Relationship from an Equation

Which best describes the equation?
y = 75x

• Proportional

• Nonproportional

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

Write an equation for this situation.

• y=9.75x

• y=19x

• y=19.25x

• y=9.5x

Does the equation show a proportional relationship?

• Yes

• No

What is the equation of the graph?

• y = x + 2

• y = 1/2x

• y = 2x

• y = x + 1

• Taylor can write 6 words per minute
• Taylor can write 25 words per minute
• Taylor can write 50 words per minute
• Taylor can write 150 words per minute

Determine the slope and y-intercept from the following equation:   y = 3/2x + 3

• slope: 5   y-intercept:  (0,3) 

• slope: 3/2   y-intercept:  (0,3) 

• slope:  4  y-intercept:  (0,3/2)

• slope: 1/5   y-intercept:  (0,5) 

How much money would you make in 6 hours?

• $44

• $9

• $54

• $45

The cost, c, of potato salad by its weight in pounds, p, at a deli is given in the table above.  Which equation best models this data.

• c = .29p

• c = 3.5p

• p = .29c

• p = 3.5c

Determine which equation does NOT represent a proportional relationship.

• y = -2x

• y = 1/2 x

• y = 3x

• y = 5x - 7