Direct Variation

Given that y varies directly with x, use the values specified to write a direct variation equation relating y to x.

Mathematical Equivalence

ON

Given that y varies directly with x, use the values specified to write a direct variation equation relating y to x.

Mathematical Equivalence

ON

Given that y varies directly with x, use the values specified to write a direct variation equation relating y to x.

x=17, y=68

Mathematical Equivalence

ON

The distance traveled by an object is directly proportional to the amount of time spent traveling. An object spending 9 hours in travel goes a distance of 563 miles. How far would the object go that travels fo 3 hours? Round your answer to the nearest hundredth.

• 187.67 miles

• .05 miles

• 1683.00 miles

• 287.7 miles

• F

• G

• H

• J

The value of y is directly proportional to the value of x. When x = 3.5, the value of y is 14.

What is the value of y when x = 28?

Mathematical Equivalence

ON

• F

• G

• H

• J

Is this a direct variation?

• yes

• no

In the direct variation equation, ​ (a)   =​ (b)   ​ (c)  

• y

• k

• g

• x

• a

• b

In the direct variation, y = kx, to isolate k, you should ​ (a)   both sides of the equation by ​ (b)  

• divide

• multiply

• x

• y

• k