Direct/Inverse Variation

Front

What does the Direct Variation Equation look like?

Back

y = kx

Front

Determine the type of variation: If y increases as x decreases, what type of variation is this?

Back

Inverse

Front

What ordered pair does a direct variation always go through when graphed?

Back

(0, 0)

Front

Which of the following graphs represents a direct variation?

Back

Graph C

Front

Which of the following represents direct variation? y = kx, y = k/x, y = x/k, y = mx + b

Back

y = kx

Front

What is the constant of variation in the equation y = 3x?

Back

3

Front

If y varies directly with x, and y = 10 when x = 2, what is the value of y when x = 5?

Back

25

Front

What is the formula for inverse variation?

Back

y = k/x

Front

If y varies inversely with x, and y = 4 when x = 2, what is the value of y when x = 8?

Back

2

Front

What does it mean for two variables to vary directly?

Back

As one variable increases, the other variable also increases.