DIRECT VARIATION

Front

What type of relationship is a direct variation?

Back

Proportional

Front

Is the relationship in the table a direct variation? (Example: y = 2x, y = 4x)

Back

Yes

Front

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

Back

Constant of proportionality

Front

Is the relationship in the table a direct variation? (Example: y = 3, y = 5x)

Back

No

Front

Write an equation for this relationship: (Example: If y varies directly with x and k = 2)

Back

y = 2x

Front

What is the general form of a direct variation equation?

Back

y = kx

Front

If y = 5 when x = 1, what is the constant of proportionality (k)?

Back

k = 5

Front

If y = 10 when x = 2, is this a direct variation?

Back

Yes

Front

If y = 0 when x = 0, what can be said about the relationship?

Back

It is a direct variation.

Front

What is the graph of a direct variation equation like?

Back

A straight line that passes through the origin.