Use the function rules to find the coordinates of A" B" C" and predict the quadrant it will be in after the transformations. AABC, with coordinates A (-8, 4), B(-5,8), and C (-3, 3), is transformed by (x, y)(x+4, y6) to produce ΔΑ' Β'C'. ΔΑ' Β'C' is transformed by the rule (x, y)(x+5, y3). Create the rule for the composition transformation and predict what quadrant the image will be in. (4 points)

1 answer

Let's start by applying the transformation rules step by step to find the coordinates of points A", B", and C" after the transformations.

  1. Initial Points:

    • A(-8, 4)
    • B(-5, 8)
    • C(-3, 3)
  2. First Transformation (to get A', B', C'): The transformation rule is given by \( (x, y) \to (x + 4, y + 6) \).

    • For A: \[ A' = (-8 + 4, 4 + 6) = (-4, 10) \]

    • For B: \[ B' = (-5 + 4, 8 + 6) = (-1, 14) \]

    • For C: \[ C' = (-3 + 4, 3 + 6) = (1, 9) \]

    So after the first transformation, we have:

    • A'(-4, 10)
    • B'(-1, 14)
    • C'(1, 9)
  3. Second Transformation (to get A'', B'', C''): The transformation rule is given by \( (x, y) \to (x + 5, y + 3) \).

    • For A': \[ A'' = (-4 + 5, 10 + 3) = (1, 13) \]

    • For B': \[ B'' = (-1 + 5, 14 + 3) = (4, 17) \]

    • For C': \[ C'' = (1 + 5, 9 + 3) = (6, 12) \]

    So after the second transformation, we have:

    • A''(1, 13)
    • B''(4, 17)
    • C''(6, 12)
  4. Chain Rule (Composition of Transformations): The composed transformation rule from the original points is calculated by combining the two transformations:

    Starting from \( (x, y) \), we first apply \( (x + 4, y + 6) \) followed by \( (x + 5, y + 3) \):

    • First transformation: \[(x, y) \to (x + 4, y + 6)\]
    • Second transformation applied to the result of the first: \[(x + 4, y + 6) \to ((x + 4) + 5, (y + 6) + 3)\]
    • This simplifies to: \[ (x + 9, y + 9) \]

    Therefore, the overall transformation rule is: \[ (x, y) \to (x + 9, y + 9) \]

  5. Predicted Quadrant: Now let's consider the final coordinates of A'', B'', and C'':

    • A''(1, 13) is in Quadrant I (both x and y are positive).
    • B''(4, 17) is also in Quadrant I.
    • C''(6, 12) is in Quadrant I as well.

Since all the transformed points A'', B'', and C'' have positive x and y coordinates, we can predict that the image will be in Quadrant I.