SOLUTION: Please help me with this one. Write the equation of a line that is perpendicular to the y-axis and has a y-intercept of -5. Thank you in advance.

Algebra ->  Linear-equations -> SOLUTION: Please help me with this one. Write the equation of a line that is perpendicular to the y-axis and has a y-intercept of -5. Thank you in advance.      Log On


   

Question 129804: Please help me with this one.
Write the equation of a line that is perpendicular to the y-axis and has a y-intercept of -5.
Thank you in advance.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
A line perpendicular to the y-axis is parallel
to the x-axis. Since the slope is defined as
(change in y)/(change in x), the slope is zero.
There is never any change in y no matter what
the change in x is.
The general equation for a straight line is:
y+=+mx+%2B+b where m is the slope
and b is the y-intercept.
I just said m=0 for the line perpendicular
to the y-axis, so
y+=+0%2Ax+%2B+b
y+=+b
The problem says the y-intercept is -5
y+=+-5 answer