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Reading (x, y) from a Graph
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This unit provides practice in reading the coordinates of points from a graph. For Figure 1, when x = 1, what is the y-coordinate? |
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y = 3 corresponds to x = 1. Express this point as an ordered pair. |
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The ordered pair is (1, 3). Find the x-coordinate of a point with y-coordinate
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The point with y-coordinate of -1 has a corresponding x-coordinate of -3. Express as an ordered pair. |
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(-3, -1) Fill in the missing coordinate for the point that lies on the graph: (2, __) |
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The point is (2, 4). Fill in the missing coordinate for the point that lies on the graph: (__, 1). |
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The point is (-1, 1). In Figure 2, determine the y-coordinate for the point with x = 1. |
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y = -4 for the point at x = 1. How many points have a y-coordinate of -3? |
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There are two points with a y-coordinate of -3. Determine the x-coordinate of the left point with y = -3. |
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The left point is located at x = 0. Determine the x-coordinate of the right point |
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The right point has an x-coordinate of 2. Express these as ordered pairs. |
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The ordered pairs are (0, -3) and (2, -3). In general on a parabola, there are two points with any particular y-coordinate. Fill in the missing coordinate for the two points (__, 5). |
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The points are (-2, 5) and (4, 5). For Figure 3, consider the part of the graph in quadrant I. When x = 3, what is the value of y? |
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y = 4. Express this point as an ordered pair. |
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The point is (3, 4). Are there points in any other quadrant with x-coordinate = 3? |
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Yes. Which quadrant? |
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Quadrant IV. What is the y-coordinate of the point in Quadrant IV with x-coordinate = 3? |
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y = - 4 for the point in Quadrant IV having x = 3. Express this point as an ordered pair. |
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The point in Quadrant IV is (3, -4). How many points on the graph have |
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Two. Express the left one as an ordered pair. |
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(-4, 3). Express the right point as an ordered pair. |
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(4, 3). |
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