Direct and Partial Variarion

A linear relation that has an initial value of 0 is what type of variation?

• Direct variation

• Partial variation

• Linear variation

• Nonlinear variation

A linear relation that has an initial value that is not 0 is what type of variation?

• Direct variation

• Partial variation

• Linear variation

• Nonlinear variation

Is this equation an example of direct variation?

 $C=2n$  

• yes

• no

Which of the given graphs is a direct variation?

• A
• B
• C
• D

Write an equation for this situation if C represents the total cost and d represents the number of days of renting the car.

• $C=9.75d$

• $C=19d$
  

• $C=19.25d$
  

• $C=9.5d$

Does this graph represent direct variation?

• yes

• no

Write the equation for the table given.

• $y=\frac{1}{3}x$

• $y=3x$

• $y=\frac{1}{2}x$

• $y=2x$

At what rate did the rain fall (Hint: what is the ROC)?

• 2 cm per hour

• ¹/₄ cm per hour

• ¹/₂ cm per hour

• 4 cm per hour

What does the Direct Variation Equation look like?

• $dv=\left(RoC\right)iv$

• $dv=\left(RoC\right)iv+initial$

• $dv=\left(RoC\right)initial$

• $dv=iv$
  

Does the data in this table describe a partial variation relationship?

• Yes

• No