DIRECT VARIATION

Front

What does the Direct Variation Equation look like?

Back

Y = kx

Front

What is another name for k in the Direct Variation equation?

Back

Slope

Front

If y varies directly with x, and y = 39 when x = 3, find the value of y when x = 2.

Back

y = 26

Front

If y varies directly with x, when y = 22 and x = -11, find x when y = 12.

Back

x = -6

Front

If y = 4 when x = -4, find y when x = 7.

Back

y = -7

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

How do you determine if two variables vary directly?

Back

Two variables vary directly if their ratio is constant.

Front

What is the graph of a direct variation equation?

Back

The graph is a straight line that passes through the origin.

Front

If k = 5 in the equation y = kx, what is y when x = 3?

Back

y = 15

Front

If y = 10 when x = 2, what is the value of k?

Back

k = 5