1.   Determine the value of r so that the line through (5, 2) and (7, r) has a slope of .
   
    A. 6 B. 2
    C. 1 D. 3
    Hint

  2.   Determine the slope of the line that passes through (2, 2) and (5, 8).
    A. B.
    C. -2 D. 2
    Hint

  3.   Write in standard form.
    A. B.
    C. 2x + 3y = -8 D. 2x + 3y = 0
    Hint

  4.   Write the standard form of an equation of the line that passes through
(-2, 5) and has an undefined slope.
    A. -2x + 5y = 0 B. y = 5
    C. x = -2 D. x - y = 3
    Hint

  5.   What is implied when it is said that x and y have a negative correlation?
    A. When the value of x increases, the value of y decreases.
    B. When the value of x is negative, the value of y negative.
    C. When the value of x increases, the value of y does not necessarily increase or decrease.
    D. When the value of x increases, the value of y increases.
    Hint

  6.   Which relationship would most likely have a positive correlation?
    A. the amount of memory in computer, and the number of keys on the keyboard.
    B. the number of miles driven, and the number of gallons of gas in the car.
    C. the rate at which a train travels, and the time it takes for it to reach its destination.
    D. the number of tickets sold for a baseball game, and the number of hotdogs sold at the game.
    Hint

  7.   The equation V = -32t + 256 and the graph below describe the velocity V in feet per second of a ball t seconds after is is shot into the air. What is the ball's velocity after seven seconds?
   
    A. 32 ft/s B. 256 ft/s
    C. 480 ft/s D. 0 ft/s
    Hint

  8.   Three out of the four equations listed below are equations of lines that are parallel to each other. Which equation does not have a graph that is a line parallel to the other three?
    A. 8y = - 6x
    B. 3x + 4y = -16
    C.
    D.
    Hint

  9.   Suppose y varies directly as x, and y = -319 when x = 29. Write a direct variation equation that relates x and y.
    A. B. y = 11x
    C. D. y = -11x
    Hint

  10.   Suppose y varies directly as x, and y = -65 when x = -26. Write a direct variation equation that relates x and y.
    A. B.
    C. D.
    Hint

  11.   Graph 7x + 2y = -12.
    A. B.
    C. D.
    Hint

  12.   Write an equation of a line that passes through (-12, -14) with slope .
    A. B.
    C. D.
    Hint

  13.   A ticket service is selling tickets to a concert. An order of 4 tickets has a price of $63 and an order of 6 tickets has a price of $92. Write an equation to find the price of any amount of tickets.
    A. B.
    C. D.
    Hint

  14.   Write the slope-intercept form of an equation for the line that passes through (-8, -1) and is parallel to the graph of
    A. B.
    C. D.
    Hint



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