Number 8

8. if s  {(x,y) | y = x} and t = { (x,y) | y = 3 – 2x}

    Write the equation for t’ = Ms (t)

Answer :

Take a point at t. it’s y = 3-2x

(0,3) (3/2,0)

A = (0,3) A’= (3,0)

B = (3/2, 0) B’ = (0, 3/2)

~ the equation of t’

y-0/3/2-0 = x-3/0-3

-3y = 3/2x-9/2

-6y = 3x – 9

2y = -x + 3

Y = 3-x/2

Number 4

Deserved the line is t.

~ Draw a triangle that can mapping onto itself by Mt.

½ is surface of ABC triangle.

~ Draw a circle that can mapping onto itself by Mt

 

Center at mirror

~ Draw a rectangle that can mapping onto itself by Mt

Number 2

Ascernaitable : the line of S, T, and U. the point of A and B as the picture of below. If T isometry with B = T(A) and U = T(S)

U = T(S) = S’

B = T (A)

A member S then B member S’

Because isometry T perpendicular of S and T’ perpendicular of S’ such that t’ at B and perpendicular of S’