Triangle ABC has vertex coordinates A(0, -3), B(-1,0), and C(-2, -1). It is reflected across the x-axis. What are the coordinates of A

Question

Triangle ABC has vertex coordinates A(0, -3), B(-1,0), and C(-2, -1). It is
reflected across the x-axis. What are the coordinates of A’B’C?
O A. A'(3,0), B’0,1),C'(1.-2)
B. A'(0,3). B'(-1,0).C1-2,1)
C. A’0.-3).B'(1,0).C12,-1)
D. A'(-3,0).B’0.-1).C'(-1,-2)

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Khánh Gia 4 months 2021-09-04T07:59:19+00:00 1 Answers 2 views 0

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    2021-09-04T08:00:53+00:00

    9514 1404 393

    Answer:

      B.  A'(0,3), B'(-1, 0), C'(-2, 1)

    Step-by-step explanation:

    The transformation for reflection across the x-axis is …

      (x, y) ⇒ (x, -y) . . . reflection across the x-axis

    Then …

      A(0, -3) ⇒ A'(0, 3) . . . . . . matches choice B only

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