Find the value of x.

x = 30°

Step-by-step explanation:

both triangles are same, with similar sides and angles.

all angles in a triangle sum up to 180°

2x + x + 90 = 180°

3x = 180° - 90°

3x = 90°

x = 90° / 3

x = 30°

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. : )