BPW 3.1

BPW 3.1

Focus Question: How can you describe how points "move" on a coordinate plane under a reflection?

Open Ended

What does it mean to reflect a figure in math?

Multiple Choice

Which is the x-value in (5, 7)?

• 5

• 7

Multiple Choice

Which is the y-value in (-4, -12)?

• -4

• -12

#2 Reflect over x-axis

(x,y) --> (x, -y)

Multiple Choice

What would the coordinates be of a reflection with the one set of coordinates as (2, 4) over the x-axis?

• (2, -4)

• (4, 2)

• (-4, 2)

#3 Reflect over y-axis

(x,y) --> (-x, y)

Multiple Choice

What would the coordinates be of a reflection with the one set of coordinates as (5, 1) over the y-axis?

• (1, 5)

• (-5, 1)

• (-1, -5)

#4 Reflect over y= -x

ex. (x,y) --> (-y, -x)

ex. (1,0) --> (0, -1)

Multiple Choice

What would the coordinates be of a reflection with the one set of coordinates as (7, 0) over the y= -x?

• (0,0)

• (-7,0)

• (0, -7)

#5 Reflect over y=x

(x,y) --> (y, x)

ex. (1,4) --> (4,1)

Multiple Choice

What would the coordinates be of a reflection with the one set of coordinates as (-9, 4) over the y=x?

• (9,4)

• (4, -9)

• (-4, 9)