Direct Variation

A car travels 420 miles in 8 hours.  If the car continues at the same rate, how far will it travel in 12 hours?

• 630 miles
• 630 hours
• 600 miles
• 540 hours

Is this the graph of a direct variation?

• Yes

• No

Is this the graph of a direct variation?

• Yes

• No

Kevin is mixing paint to make orange. The ratio of red paint to yellow paint is 3 oz to 5 oz. How much yellow paint should he mix with 9 oz of red paint?

• 15 oz
• 30 oz
• 45 oz
• 11 oz

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

• Yes; 1/4
• Yes; 4
• Yes; 2
• No

Does the relationship represent direct variation?

• Yes
• No

Which of the given graphs is a direct variation?

• A
• B
• C
• D

The letter k in the equation y = kx stands for

• the constant of proportionality

• king

• queen

What type of relationship is a direct variation.

• proportional

• non-proportional

What does "k" stand for in the direct variation equation?

• constant of equality

• constant of proportionality

• constant of non-proportionality