3 years ago

Any people good at math that mind helping me?

2 answers:

8 0

Plug the coordinate pairs into the equation. The first value is the x, and the second value is why. Solve the equation and if the answer on both sides is the same number, the coordinate pair satisfied the equation

Alexxandr [17]3 years ago

7 0

5x - 2y = -9
5(-1) -2(2) = -9
-5 - 4 = -9
-9 =- 9

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Which transformations can be used to map a triangle with vertices A(2, 2), B(4, 1), C(4, 5) to A’(–2, –2), B’(–1, –4), C’(–5, –4

jek_recluse [69]

Notice that every pair of point (x, y) in the original picture, has become (-y, -x) in the transformed figure.

Let ABC be first transformed onto A"B"C" by a 90° clockwise rotation.

Notice that B(4, 1) is mapped onto B''(1, -4). So the rule mapping ABC to A"B"C" is (x, y)→(y, -x)

so we are very close to (-y, -x).

The transformation that maps (y, -x) to (-y, -x) is a reflection with respect to the y-axis. Notice that the 2. coordinate is same, but the first coordinates are opposite.

ANSWER:

"<span>a 90 clockwise rotation about the origin and a reflection over the y-axis</span>"