Proportional Tables and Graphs with Equations

Nancy can type 50 words per minute. Look at the table below to write an equation that matches the data.

• m=50 + w

• w= 50m

• w= 50 + m

• m= 50 - w

Is the graph proportional or non proportional?

• proportional

• non proportional

• both

• neither

What is the equation of the line?

• y = 20x

• y = x + 20

• y = 2x

• y = x + 2

You earn $18 for every hour you work. Which equation represents this function?

• y=(18/2)x + 0

• y = 18x

• y = 2x + 18

• y = 18x + 2

You are visiting Houston, Texas and a taxi cab company charges a flat rate of $4.00 for using the cab and $0.95 per mile.  Write an equation to determine the cost when x miles is driven.

• y = .75x

• y = .95x

• y = .95x + 4

• y=4.95x

The number of trees and the number of apples are given in the table above.  Determine which statement below is correct.

• The table is not proportional because the unit rate is not constant.

• The table is proportional and the unit rate is 1/13

• The table is proportional and the unit rate is 13.

• The table is not proportional because it doesn't pass through the origin.

Write an equation from the graph using (p) for price and (w) for weight.

• p = 20w

• w = 20p

• p = 20p

• w = 20w

The money I have is represented by the equation: y = 10x + 100 where x = number of weeks and y = money remaining. How does my money CHANGE each week?

• increases by $10 each week

• decreases by $10 each week

• increases by $100 each week

• decreases by $100 each week

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

What is the correct equation for the graph?

• y = x + 5

• x = y

• y = 5x

• x = 5y