Direct Variation

Front

What does the Direct Variation Equation look like?

Back

y = kx

Front

Is this a direct variation equation? y = 7x + 3

Back

No

Front

Which graph shows a direct correlation between x and y?

Back

Graph A

Front

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

Back

No

Front

In a direct variation, y=39 when x=3. Find the value of y when x=2.

Back

26

Front

What is the constant of variation in a direct variation equation?

Back

The constant of variation (k) is the ratio of y to x.

Front

If y varies directly with x, and y = 10 when x = 2, what is k?

Back

k = 5

Front

What is the relationship between x and y in direct variation?

Back

As x increases, y increases proportionally.

Front

Can a direct variation equation have a y-intercept other than zero?

Back

No, it must pass through the origin.

Front

If y = 4x, what is the constant of variation?

Back

k = 4