Direct Variation Review
No - the line does not pass through the origin
Does the relationship represent a direct variation?
No - there is not a constant of variation
Does the relationship represent a direct variation?
Yes - the constant of variation is 30.
Does the relationship represent a direct variation?
Yes - the line passes through the origin
Does the relationship represent a direct variation?
yes - the constant of variation is 3/2.
Does the relationship represent a direct variation?
y = 2x + 1, no - the y-intercept is not zero
Solve the equation for y and determine if the relationship is a direct variation. -6x - 24 = -3(y + 7)
y = 4x, yes - the constant of variation is 4
Solve the equation for y and determine if the relationship is a direct variation. 2(y + 8) - 4 = 8x + 12
(0,0)
What ordered pair does the graph of a direct variation always pass through?
-35
x and y vary directly. If y = -15 when x = 3, find the value of y when x = 7
35
x and y vary directly. If y = 30 when x = 6, find the value of y when x = 7
24
x and y vary directly. If y = 30 when x = 90, find the value of y when x = 72
6
x and y vary directly. If y = 4 when x = 8, find the value of y when x = 12
yes - the constant of variation is 20
A local gym costs $20 per month to use the gym. Does the total cost vary directly with the number of months?