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Lesson 20: Graphing on a Coordinate Plane — Practice Questions

  1. 1. A point is located 7 units to the right of the y-axis and 2 units below the x-axis. What is the ordered pair $(x,y)$ for this point? ___

  2. 2. Which statement correctly describes how to plot the point $(-5, -3)$ starting from the origin $(0, 0)$?

    • A. Move 5 units left, then 3 units down.
    • B. Move 5 units right, then 3 units down.
    • C. Move 3 units left, then 5 units down.
    • D. Move 5 units left, then 3 units up.
  3. 3. A point is plotted by moving 8 units to the left from the origin and not moving up or down. What are the coordinates $(x, y)$ of this point? ___

  4. 4. A student graphs a point by first moving 3 units up and then 9 units left from the origin. What ordered pair $(x, y)$ corresponds to this location?

    • A. (-9, 3)
    • B. (3, -9)
    • C. (9, 3)
    • D. (-3, 9)
  5. 5. To plot a point, you start at the origin, move 4 units down, and then 1 unit right. What are the coordinates of this point? ___

  6. 6. The total distance a car travels is determined by its speed. In this relationship, which quantity is the dependent variable?

    • A. The speed of the car
    • B. The total distance traveled
    • C. The model of the car
    • D. The color of the car
  7. 7. For the equation $y = 4x + 7$, what is the value of the dependent variable $y$ when the independent variable $x$ is $-2$? The value is ___.

  8. 8. The equation $P = 15h - 50$ shows a worker's profit, $P$, for working $h$ hours, after accounting for 50 dollars in supply costs. Which statement correctly identifies the variables?

    • A. The profit, $P$, is the independent variable, and the hours, $h$, is the dependent variable.
    • B. The hours, $h$, is the independent variable, and the profit, $P$, is the dependent variable.
    • C. The supply cost is the dependent variable.
    • D. Both $P$ and $h$ are dependent variables.
  9. 9. In the equation $y = 8x - 5$, find the value of $y$ when $x = \frac{1}{2}$. The value of $y$ is ___.

  10. 10. A baker finds that the number of cookies she can make depends on the amount of flour she has. Which variable is the independent variable?

    • A. The number of cookies
    • B. The amount of flour
    • C. The size of the oven
    • D. The type of cookie