9.1-9.4 Test

Question 1

How to write a rule

Answer 1

Ex.

X+2,Y-2

Question 2

How to verify translation is isometry

Answer 2

Show the original points and the prime points

Then show how each one applied the same rule

Question 3

Reflected in the x-axis

Answer 3

(A,-B)

Question 4

Reflected in the y-axis

Answer 4

(-A,B)

Question 5

Reflected in the line y=x

Answer 5

(B,A)

Question 6

Reflected in the line y=-x

Answer 6

(-b,-a)

Question 7

When doing a two part reflection, the second part is based on the —– reflection

Answer 7

Not the original picture but the prime or first reflection

Question 8

Rotations of Positive magnitude rotate

Answer 8

Counter clock wise

Question 9

Rotations of a negative magnitude rotate

Answer 9

Clock wise

Question 10

90 degrees rotate

Answer 10

(-b,a)

Question 11

180 degrees rotate

Answer 11

(-a,-b)

Question 12

270 degree rotate

Answer 12

(b,-a)

Question 13

How to rotate around a different point than original point

Answer 13

Pick two points
Subtract the rotation point
Apply rule
Add point back in

Question 14

When given an equation of a line needed to be rotated, when it’s 180 degrees it’s always

Answer 14

The same line, when rotated 180 degrees it comes out to be the same line

Question 15

A(-1,2), rule is

A prime = (?,?)

Answer 15

(-4,3)
-1 + -3 = -4
1 + 2 = 3

Question 16

Component form of a vector