Explain Point [7.PR.2c]

The value of y varies directly with the value of x. When y = 32.5, x = 5. What is the value of y when x = 10?

• 6.1

• 65

• 97.5

• 130

The value of y varies directly with the value of x. When y = 32.5, x = 5. What is the value of y when x = 15?

• 6.1

• 65

• 97.5

• 130

What is the equation for this graph?

• y=3.5x

• y=1/3x

• y=-1/3x

• y=-3x

Answer explanation

its proportional, going through the origin(0,0) so you can divide y/x to find the constant of proportionality, unit rate, slope

it almost look like it crosses at (1,3) but it just over so could go to (2,7) where it hits those coordinated 7/2= 3.5

What is the equation for this graph?

• y=3.5x

• y=2/7x

• y=-1/3x

• y=-3x

Answer explanation

its proportional, going through the origin(0,0) so you can divide y/x to find the constant of proportionality, unit rate, slope

it almost look like it crosses at (3,1) but it at (7,2) so this is 2/7

again it it y/x not x/y

(x,y)

The amount of money Susan earns (y) for every magazine she sells (x) is shown on the graph. Which equation could Susan use to calculate the amount of money she earns for any number of magazines she sells?

Answer explanation

y/x crosses at (4,3)

The distance driven in miles is proportional to the time driven in hours. Ebony drives at a constant rate and plots her progress on a coordinate plane. The point (3, 180) is plotted. At what rate is Ebony driving in miles per hour?

• 60mph

• 180mph

• 90mph

• 30 mph

Answer explanation

y/x (x,y)

Sam wants to know how long it will take to fill his baby pool that holds 24 gallons. After 1 minute, there are 2 gallons of water in the pool. He plots the points (0,0) and (1,2) on his coordinate plane. What is the x-value of the point (x, 24)?

• 18

• 12

• 23

• 25

Sam wants to know how long it will take to fill his baby pool that holds 24 gallons. After 3 minutes, there are 2 gallons of water in the pool. He plots the points (0,0) and (3,2) on his coordinate plane. What is the x-value of the point (x, 24)?

• 18

• 12

• 36

• 25

Write an equation that gives the proportional relationship of the graph.

• y=2x

• y=12x

• y=2/12

• y=6x

The graph represents the gallons of water (y) per minute (x) dispensed by a shower head. Which three statements are correct?

• 7.5 gallons of water are used in 1.5 minutes.

• Point (5, 1) represents the unit rate.

• Point (0, 0) represents the unit rate.

• Point (1, 5) represents the unit rate.

• Point (0, 0) represents zero minutes and zero gallons.