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A math exam focusing on direct and inverse variation. It includes multiple-choice questions asking for the correct equations for direct and inverse variation given data, as well as questions asking for the table or graph representing a direct or inverse variation. The document also includes problems asking for the decrease in the number of employees when the yearly gross profit declines, and the temperature or miles traveled given the number of water bottles or cars' fuel, respectively.
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[Exam ID:CBDLTC (^1) Which is an equation for the direct variation that includes the given data? A xy = 2 B y = 2 x C (^) y = 5 x D y = 8 x (^2) Which is an equation for the inverse variation that includes the given data? A (^) y =
x B y = x + 2 C (^) y = 15 x D y = x 15
(^3) Which is an equation for the direct variation that includes the given data? A y = x - 2 B y = x 2 C y = 2 x D y = x + 2 (^4) Which table represents an inverse variation? A B C D
(^9) The number of miles, m , a car can travel varies directly with the amount of gas, g , in its fuel tank. If k is the constant of variation, which equation represents that situation? A m = g + k B m = kg C m = k g D m = g k (^10) The function ƒ( x ) = 35 + 15 x represents the amount of money, in dollars, Mr. Lewis earns for working x hours. How much money does Mr. Lewis earn for working 25 hours? A $ B $ C (^) $ D (^) $1,
(^11) Which relation represents an inverse variation? A B C D (^12) Click on a box to select an answer. You must select all correct tables. Which of the following tables represent a direct variation? (^13) Type your answer in the box. The amount of money earned varies directly with the number of hours worked. Mark earned $76 when he worked 8 hours. How much money will Mark earn if he works 34 hours? $
(^16) Click on a box to select an ordered pair. You must select ALL correct ordered pairs. Which of the following ordered pairs would lie on the same line of direct variation as (16,4)? (-1,4) (-20,-5) (-8,-2) (4,16) (9,3) ( , )
(^17) Directions: Click on a box to choose each point you want to select. You must select all correct points. The graph of the equation representing a direct variation passes through point A. Identify each additional point that is on the graph of this equation. (-6, - 8) (-3, - 4) (-5, - 6) (^) (4, 3) (0, 0) (6, - 8)
(^18) Directions: Click on a box to select your answer. You must select all correct answers. The given point is an element of a direct variation. Select all points below that are elements of this direct variation. (-2, - 3) (^) (1, 1) (0, 0) (-3, 2) (2, 3) (6, 4) (^19) The money Sam earns varies directly with the number of hours she baby sits. She earns $50 for five hours. Which graph represents her earnings for the job? A C B D
(^22) Directions: Click and drag a situation to the correct box. Complete the table with the given situations. (^23) Which of these equations is a direct variation? A y = - 8 x - 1 B y = - 8 x + 1 C y = - 8 x D y = - 8 24 The cost of fabric varies directly with the amount of fabric purchased. If 1 yards of fabric cost $10.00, how much would 4 yards cost?
The cost per person to rent a mountain cabin varies with the number of people who share the rent The amount of money earned on a job related to the number of hours worked
