Do x and y show direct variation?

y = 2x + 3

• Yes

• No

Do x and y show direct variation?

y = 5x

• Yes

• No

Do x and y show direct variation?

y = x²

• Yes

• No

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)

Is this the graph of a direct variation?

• Yes

• No

Write an equation for this relationship.

• y=4x
• y=1/8x
• y=1/4x
• y=8x

Does the relationship represent direct variation?

• Yes
• No

Does the equation describe a partial variation relationship?

• Yes

• No

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

• Yes

• No

Does this graph describe a partial variation relationship?

• Yes

• No