Which of the equations below represents a line parallel to the x-axis

a. x=5
b. y=1/x
c. y=x
d. y=5

1. are the triangles similar and if so why? what is the value of x? show your work.

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°