Variation

If x and y vary directly, what is the missing value in the points (x, 4) and (-14, -8)?

• x = -7
• x = -2.3
• x = 2.3
• x = 7

Which of the given graphs is a direct variation?

• A
• B
• C
• D

Is this a direct variation?
y=2x

• yes
• no

 Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x
• y=100x
• y=5.25x
• y=4/21x

Does the relationship represent inverse variation?

• Yes
• No

Tags

CCSS.HSF-LE.A.1B

 y varies directly with x, and y is 84 when x is 16. What is the constant of proportionality?

• y = (21/4)x
• k= 21
• k= 5.25
• k= 4/21

Write the equation for the table given.

• y = 1/3x
• y = 3x
• y = 1/2x

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

• y = 13x
• y = 65x
• y = 5x
• y = 1/13x

Is this a direct variation?  y =2x + 1

• Yes
• No

Is the given table a direct variation? If so, what is the constant of variation?

• Yes; 1/3
• Yes; 3
• Yes; 5
• No