Use the function rules to find the coordinates of ΔA"B"C"

Δ
𝐴
"
𝐵
"
𝐶
"
and predict the quadrant it will be in after the transformations. ΔABC
Δ
𝐴
𝐵
𝐶
, with coordinates A(−8,4)
𝐴
(

8
,
4
)
, B(−5,8)
𝐵
(

5
,
8
)
, and C(−3,3)
𝐶
(

3
,
3
)
, is transformed by (x,y)→(x+4,y−6)
(
𝑥
,
𝑦
)

(
𝑥
+
4
,
𝑦

6
)
to produce ΔA′B′C′
Δ
𝐴

𝐵

𝐶

. ΔA′B′C′
Δ
𝐴

𝐵

𝐶

is transformed by the rule (x,y)→(x+5,y−3)
(
𝑥
,
𝑦
)

(
𝑥
+
5
,
𝑦

3
)
. Create the rule for the composition transformation and predict what quadrant the image will be in.(4 points)

1 answer

To find the coordinates of \(\Delta A"B"C"\) after the transformations, we will follow these steps:

  1. Apply the first transformation: \((x,y) \to (x+4, y-6)\) to the vertices of \(\Delta ABC\).

    • For \(A(-8, 4)\): \[ A' = (-8 + 4, 4 - 6) = (-4, -2) \]

    • For \(B(-5, 8)\): \[ B' = (-5 + 4, 8 - 6) = (-1, 2) \]

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

    After the first transformation, the coordinates of \(\Delta A'B'C'\) are:

    • \(A'(-4, -2)\)
    • \(B'(-1, 2)\)
    • \(C'(1, -3)\)
  2. Apply the second transformation: \((x,y) \to (x+5, y-3)\) to the coordinates of \(\Delta A'B'C'\).

    • For \(A'(-4, -2)\): \[ A" = (-4 + 5, -2 - 3) = (1, -5) \]

    • For \(B'(-1, 2)\): \[ B" = (-1 + 5, 2 - 3) = (4, -1) \]

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

  3. Coordinates of \(\Delta A"B"C"\):

    • \(A"(1, -5)\)
    • \(B"(4, -1)\)
    • \(C"(6, -6)\)
  4. Determine the quadrant:

    • All final coordinates \((1, -5)\), \((4, -1)\), and \((6, -6)\) have positive \(x\)-values and negative \(y\)-values. Therefore, they are all in the fourth quadrant.
  5. Create the rule for the composition transformation:

    • The combined transformation can be represented as: \[ (x, y) \to (x + 4, y - 6) \quad \text{then} \quad (x + 5, y - 3) \]
    • If we combine these transformations, we get: \[ (x, y) \to ((x + 4) + 5, (y - 6) - 3) = (x + 9, y - 9) \]

So, the composite transformation rule is: \[ (x, y) \to (x + 9, y - 9) \]

In conclusion, the final coordinates of \(\Delta A"B"C"\) are \(A"(1, -5)\), \(B"(4, -1)\), and \(C"(6, -6)\), and the transformed triangle is located in the fourth quadrant.