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PLEASE HELP!!!!!!!!!!!!!!!

Given the vertices of ΔABC are A (2,-5), B (-4,6) and C (3,1), find the vertices following each of the transformations FROM THE ORIGINAL vertices:
a. Rx = 3
b. T<3,-6>
c. r(90◦, o)

User Tarrant
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1 Answer

3 votes

We suppose that T<3, -6> stands for a translation 3 units to the right and 6 units down. Adding (3, -6) to each of the coordinates gives ...

A + (3, -6) = A'(5, -11)

B + (3, -6) = B'(-1, 0)

C + (3, -6) = C'(6, -5)

_____

Likewise, we suppose r(90°, O) stands for rotation 90° CCW about the origin. This means coordinates (x, y) are replaced by (-y, x).

A(2, -5) ⇒ A'(5, 2)

B(-4, 6) ⇒ B'(-6, -4)

C(3, 1) ⇒ C'(-1, 3)

_____

We have no idea what Rx=3 means, so cannot help there. It seems possible that the x-coordinates are supposed to be multiplied by 3, which would give

A'(6, -5), B'(-12, 6), C'(9, 1)

YMMV

User MStudent
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