So the theorem is AIA but I can't find the value of x help please (oh and I thin the image is upsidedown.)

x = - 6

Step-by-step explanation:

Remark

When parallel lines are cut by a transversal (as these lines are) then there are only 2 values for the angles can be made.  In this case, the angles formed are alternate interior angles.

Alternate interior angles are equal.

Solution

x + 86   = 80               Subtract 86 from both sides.

x + 86-86 = 80 -86

x = - 6

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )