Direct Proportional

Is the relationship proportional? If so, state the constant of proportionality.

• Yes; k=10

• Yes; k=1

• Yes; k=0.1

• No

Write the direct variation equation for this relationship.

Write the direct variation equation for this proportional relationship.

• y=0.25x

• y=5x

• y=4x

• y=100x

A dishwasher uses 65 gallons of water to wash 5 loads of dishes. What is the direct variation equation?

• y=13x

• y=65x

• y=5x

• y=0.7x

Loretta paid $10.72 for 8 cans of cat food. What's the cost for 12 cans of cat food?

• $1.34

• $16.08

• $17.42

• $12.23

You need 2 yards of fabric to cover 3 pillows and 6 yards to cover 9 pillows. How much fabric do you need to cover 15 pillows?

• 10 yards

• 22.5 yards

• 8 yards

At top speed, a rabbit can cover 48 miles in 2 hours. What is the direct variation equation?

• y=0.04x

• y=12x

• y=48x

• y=24x

Select all equations that have direct variation (proportional relationship)

• y = 2x - 4

• -x + y = 0

This graph is a​

(a)   because it​ (b)   and is ​ (c)   ​ ​

• Linear Function

• Non-Linear Function

• Not a Function

• passes the vertical line test

• does not pass vertical line test

• straight line

• not a straight line

This relation is a

(a)   because each​ (b)   ​ and ​ ​​ (c)  

• Nonlinear function

• Linear function

• Not a function

• input (x) does NOT have ONE output (y)

• does NOT have a constant rate of change

• input (x) has ONE output (y)

• has constant rate of change