GED Mathematical Reasoning Test For Dummies
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You're likely to encounter a question or two on the GED Mathematical Reasoning test that present mathematical relationships in graph form. These questions will require you to understand the relationships between slopes, linear equations, and coordinate planes.

The following practice questions ask you to find the equation of a line based on its slope and y-intercept, and then to indicate where a circle intersects the negative y-axis on a plotted graph.

Practice questions

  1. What is the equation of a line with slope 0.75 and y-intercept 6 if you express the slope as a rational number?

    A. 3x – 4y = 24

    B. 4x – 3y + 24 = 0

    C. 3x + 4y = –24

    D. 3x – 4y + 24 = 0

  2. A circle is drawn with its center at the origin and a radius of 5 units. Where will the circumference intersect the negative y-axis? Circle this point on the graph.


Answers and explanations

  1. D.

    Using the general equation of a line y = mx + b and substituting the given values, you would arrive at

  2. (0, –5)

    The circumference would intersect the negative y-axis at a point 5 units below the origin, or at (0, –5) since the y-axis goes from top to bottom.

About This Article

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About the book authors:

Murray Shukyn, an acknowledged Canadian leader in alternative education, has taught at the elementary, secondary, and university levels and created adult training programs. Achim Krull has taught at high school and adult levels, and has written textbooks, teachers' guides, and numerous other learning materials.

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