Crazycookie1 Crazycookie1

02-01-2020
Mathematics

contestada

Help, I know D2 is the dilation of 2? And I know the rotation is 90 degrees but I’m not to sure on how to find my answer? Help please

Help I know D2 is the dilation of 2 And I know the rotation is 90 degrees but Im not to sure on how to find my answer Help please class=

Respuesta :

MathPhys MathPhys

02-01-2020

Answer:

(-18, 2)

Step-by-step explanation:

To rotate a point by 90°:

R₉₀ (x, y) = (-y, x)

R₉₀ (1, 9) = (-9, 1)

To dilate by 2:

D₂ (x, y) = (2x, 2y)

D₂ (-9, 1) = (-18, 2)

Answer Link

Otras preguntas

Within a group, which period, top or bottom is likely to contain atoms with the larger radius?

What is the relationship between president calvin coolidge’s administration and big business in the 1920s?

Please help me for this problem

Explain the flow of energy in an energy pyramid like the one below.then tell how an energy pyramid and a food chain are the same and how the are different

Classify the triangle based on the side lengths 4.2, 6.4 and 7.6acuterightobtuseno triangle can be formed with those sides.

What is the plural form of the spanish word el lápiz?

Highst common factor of 24,40,56

Need help on 5. 6. And 7. 7.c is (6+x)-8 7.d is 8-(6+x)

What is the answer to this question?

A group of places that share a common feature is a what