Which reflection(s) reflect a point (-a, a) onto (a, a)?
Select all that apply.
reflection in the y-axis
reflection in the x-axis
reflection in the line y=x and then

reflection in the y-axis

Step-by-step explanation:

Point (-a, a) means:

go a units left and a units up

Falls in 2nd quadrant

Point (a,a) means:

go a units right and a units up

Falls in 1st quadrant

You will see that they are reflections of each other about the vertical axis. Which is the y-axis.

So, the points are "reflection in the y-axis".

Note: We took a = 2 and plotted (-2,2) and (2,2) in the image attached to show the reflection.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

the data of the detroit pistons in numerical order from least to greatest is 0.30, 0.37, 0.55, 0.62, 0.69, 0.72, 0.73, 0.75, 0.77, 0.78, 0.80, 0.81, 0.81, 0.83, 0.84, 0.89

the data of the miami heat in numerical order from least to greatest is 0.50, 0.50, 0.56, 0.57, 0.67, 0.72, 0.72, 0.72, 0.75, 0.75, 0.76, 0.81, 0.82, 0.90, 1.00, 1.00

the detroit pistons median : 1.52

the miami heat median: 1.47

the iqr of this data is 0.05