is the relationship a direct variation, Inverse variation, or neither? If it is direct or inverse, state the constant of variation. x y .5 16 KUHNHO O O O O 18 24 -1-8 Inverse, 2 Neither Direct, 8 Direct, 2 Inverse, 8

Which sentences describe a proportional relationship between dollars and hours? Jasmine earns $8.50 an hour to mow her neighbor's yard. A dog walker earns $10.00 for walking one dog plus $9.50 for each hour that she walks the dog. A painter earns $45.00 an hour to paint the inside of a home. The cost to take a private tennis lesson is $40.00 for one hour or $75.00 for two hours. The cost to rent a boat for 3 hours is $54.00 and the cost to rent a boat for the day is $70.00.

Select which equation would represent an inverse variation that contains the point (-4, -8). 0 000 2 у Х y= 32x 32 y= у = 2х

Find a mathematical model representing the statement. (Determine the constant of proportionality.) z varies directly as the square of x and inversely as y. (z = 36 when x = 9 and y = 3.) 4x2 Z= - Зу 3x2 z = 4y 3x2 z= - 4y 4x2 z = 3y 4x z = Зу