Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 McGraw Hill Glencoe - Answer Keys


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  Independent Practice  

Find the coordinates of the vertices of each figure after a dilation with the given factor scale k. Then graph the original image and the dilation.

  • Question 2 (request help)

    R(1, 1), S(1, 7), T(5, 7), U(5, 1); k = \(\cfrac{3}{4}\)
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  • Question 3 (request help)

    A graphic designer created a logo on \(8\cfrac{1}{2}\) by 11-inch paper. In order to be placed on a bussiness card, the logo needs to be \(1\cfrac{7}{10}\) inches by \(2\cfrac{1}{5}\) inches. What is the scale factor of the dilation?
  • Question 4 (request help)

    Darian wants to build a regulation-size pool table that is 9 feet in length. The plans he ordered are 18 by 36 inches. What is the scale factor of the dilation he must use to build the regulation pool table?
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  • Question 5 (request help)

    A triangle has vertices A(-2, 3), B(0, 0), and C(1, 1).

    a. Find the coordinates of the triangle if it is reflected over the x-axis, the dilated by a scale factor of 3.
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  • Question 5 (request help)

    b. Find the coordinates if the original triangle is dilated by a scale factor of 3, then reflected over the x-axis.
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  • Question 5 (request help)

    c. Are the two transformations commutative? Explain.
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