Intro to Direct Variation

5.      

• direct variation

• inverse variation

• neither direct nor inverse variation

What does the Direct Variation Equation look like?

• y=b

• y=x

• y=mx+c

• Y=kx

P is directly proportional to T.

Which of the following could be the graph connecting T and P?

• 
• 
• 
• 

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

• Yes; ¼

• Yes; 2

• Yes; 4

• No

n varies directly with c. If c = 24 when n = 18, what is c when n = 22?

• 88/3

• 28

• 66/4

• 24

Y varies directly as x. If y = 12 when x = 15, what is y when x = 20?

• 4/5

• 17

• 16

• 25

Which of the following is NOT a direct variation?

• y = -2x

• y = 1/2x

• 2x + 3y = 2

• 3y = 4x

The letter k in the equation y = kx stands for

• the constant of proportionality

• king

• queen

Do x and y show direct variation?

y = 5x

• Yes

• No

Does this table of values represent a direct variation?

• Yes

• No