Reflected would make a mirror image.
X is located at (1 ,-3)
Since it is being reflected across the Y axis, the X value would be the same.
The Y value is 4 units below Y=1 ( the mirror line) so the new Y value would be 4 units above the mirror line ( 4+1 = 5)
This means X' would be at (1.5)
Since (x+90) and 4x are vertical angles, and vertical angles are congruent, you can set them equal to each other.
x+90=4x
90=3x
x=30
If you want to calculate 5*(a-4) - 8*a = 55, you
have to do few steps to get to know the value of the a.
5*a - 20 - 8*a = 55
-3*a = 55 + 20
-3*a = 75 /(-3)
a = - 25
The correct result and the value of the a is -25.
The answer would be B.
Add across : x + 6x = 7x
(x + 1) + (x + 5) = 2x + 6
So you get 7x / 2x + 6
M= -2 , hope this help you <3
