Slope, Rate of Change, Direct Variation

Direct Proportion or not?

• Direct Proportion

• Not

Direct Proportion or Not?

• Direct Proportion

• Not

Direct Proportion or not?

• Direct Proportion

• Not

Which of the given graphs is a direct variation?

• A

• B

• C

• D

What ordered pair does a direct variation always go through when graphed?

• (0, 0)

• (1, 0)

• (0, 1)

• (1, 1)

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

• Yes; 1/4

• Yes; 4

• Yes; 2

• No

Write the equation for the table given.

• y = 1/3x

• y = 3x

• y = 1/2x

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

The amount of money earned on a job is directly proportional to the number of hours worked.  If $70.00 is earned in 5 hours, how much money is earned in 22 hours of work?

• $2

• $308

• $1.57

• $265

Write the equation for the table given.

• y = 1/3x

• y = 3x

• y = 1/2x