Direct Variation

The letter k in the equation y = kx stands for

• the constant of proportionality

• king

• queen

Tags

CCSS.7.RP.A.2B

An equation of direct variation can be written in the form: y = kx

• True

• False

Tags

CCSS.8.F.A.3

CCSS.8.EE.B.6

CCSS.8.F.B.4

Do x and y show direct variation?

y = 2x + 3

• Yes

• No

Tags

CCSS.7.RP.A.2D

Do x and y show direct variation?

y = 5x

• Yes

• No

Tags

CCSS.8.F.A.3

CCSS.8.EE.B.6

CCSS.8.F.B.4

CCSS.8.EE.B.5

Do x and y show direct variation?

y = x²

• Yes

• No

Tags

CCSS.8.F.A.3

The graph of a direct variation must be a straight line and must pass though

• Quadrant 1 and 3

• Quadrant 2 and 4

• the origin (0,0)

Tags

CCSS.7.RP.A.2D

Is this the graph of a direct variation?

• Yes

• No

Tags

CCSS.7.RP.A.2D

Is this the graph of a direct variation?

• Yes

• No

Tags

CCSS.7.RP.A.2D

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

• Yes; 1/4
• Yes; 4
• Yes; 2
• No

Tags

CCSS.7.RP.A.2B

Write an equation for this relationship.

• y=4x
• y=1/8x
• y=1/4x
• y=8x

Tags

CCSS.5.OA.B.3