Question

Dying for help please failing mathh

17. Which letter has at least one line of symmetry?
A) Q
B)P
C)T
D)R

18. Which letter has rotational symmetry?

A) P
B)Z
C)W
D)F



19) The waiter places a bowl of soup in front of Darcy. In a counterclockwise direction, she passes the soup 60°. The person receiving the soup passes it 90°. After the two passes, the soup is in front of which person? look at the first picture.

A) Igor
B)Jada
C) Kai
D)Lacy


20. Which rule describes a translation that is 6 units to the left and 4 units up?

A) (x, y) (x + 6, y − 4)
B) (x, y) (x − 6, y + 4)
C) (x, y) (x − 6, y − 4)
D) (x, y) (x + 6, y + 4)



21. Every dilation has a _____

A) translation and glide reflection.
B)reduction and enlargement.
C)center and scale factor.
D)reflection and rotation.


22) A taxicab starts at (1, −2) on the grid and picks up a passenger. The taxicab travels a total of 16 blocks, and then drops the passenger off. Which composition of two translations could describe the taxicab’s final position? look at the second picture.

A) (x, y) (x − 3, y + 4), and then (x, y) (x + 8, y − 1).
B) (x, y) (x + 4, y − 3), and then (x, y) (x − 9, y + 1).
C) (x, y) (x − 3, y + 4), and then (x, y) (x + 7, y − 1).
D) (x, y) (x − 4, y + 3), and then (x, y) (x + 6, y − 1).


Which glide reflection describes the mapping triangle ABC and triangle DEF?look at the third picture.

A) (x, y) (x, y – 6) and reflected across x = 0
B) (x, y) (x, y – 6) and reflected across x = −1
C) (x, y) (x, y – 6) and reflected across y = 0
D) (x, y) (x – 2, y) and reflected across x = −1


24) What is the image of (1, −6) for a 180° counterclockwise rotation about the origin?look at the forth picture.

A) (−6, −1)
B) (6, 1)
C) (−1, 6)
D) (−1, −6)


25. Which rule describes a translation that is 3 units to the right and 5 units down?

A) (x, y) (x + 3, y + 5)
B) (x, y) (x − 3, y + 5)
C) (x, y) (x − 3, y − 5)
D) (x, y) (x + 3, y − 5)



26) Identify the mapping triangle HIF and triangle HGF ? look at the fifth picture

A) rotation
B) glide reflection
C) translation
D) reflection

Answer 1

17:C
18:Z
19: Kai
20: B
21: ?
22: A
23: ?
24: ?
25: D
26:D

Answer 2

You might want to stick to at most five questions at once, makes it easier for the rest of us. :)

17. T has a vertical line of symmetry (along the center line).
18. Z looks the same if you turn it halfway around.
19. The passes total to 150°, which is a little less than 180°, so I estimate it would be in front of Kai.
20. Left is the -x direction. Up is the +y direction. this is (x-6, y+4)
21. Every dilation has a center (where it's dilated from) and a scale factor (how much it's dilated).
22. It must be A, because it's the only one where the number of moves adds up to 16.
23. It can be determined to be B just by tracking where point C would end up through the transformation.
24. A 180° rotation flips the signs on both components to give you (-1, 6).
25. Right is the +x direction. Down is the -y direction. (x+3, y-5)
26. This is a reflection.

Need clarification on anything?