Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 McGraw Hill Glencoe - Answer Keys


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  Extra 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 10 (request help)

    R(5, 5), S(5, 10), T(10, 10), U(10, 5); k = \(\cfrac{2}{5}\)
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  • Question 11 (request help)

    V(-3, 4), X(-2, 0), W(1, 2); k = 3
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  • Question 12 (request help)

    To place a picture in his class newsletter, Joaqin must reduce the picture by a scale factor of 0.3. Find the dimensions of the reduced picture if the original is 15 centimeters wide and 10 centimeters high.
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  • Question 13 (request help)

    Multiple Representations Triangle XYZ has vertices X(0, 0), Y(3, 1), and Z(2, 3).

    a. Numbers Find the coordinates of the image of ΔXYZ after a dilation with a scale factor of -2.
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  • Question 13 (request help)

    b. Algebra Graph ΔXYZ and the image on the coordinate plane.
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  • Question 13 (request help)

    c. Words Describe the locations of ΔXYZ and ΔX'Y'Z' using transformations.
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