Direct Variation / Slope Graphs

What type of relationship is a direct variation.

• proportional

• non-proportional

What does "k" stand for in the direct variation equation?

• constant of equality

• constant of proportionality

• constant of non-proportionality

Which of the following is the equation format for direct variation?

• y = mx + b

• y = kx

What is the equation to find "k", the constant of proportionality?

• y = kx

• y = mx + b

Determine if there is a constant of proportionality, k.

If there is a k, what is it?

• There is no k

• k = 8

Does the graph show a proportional relationship?

• Yes

• No

What is the equation for the given graph?

What is the equation for the given graph?

Write an equation for this relationship.

• y=4x
• y=1/8x
• y=1/4x
• y=8x

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

• Yes; 1/4
• Yes; 4
• Yes; 2
• No