SOLUTION: how do you figure out the y-intercept of an equation and how do you figure out wether it is perpendicular or not?

Question 30150: how do you figure out the y-intercept of an equation and how do you figure out wether it is perpendicular or not?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The y-intercept means "where am I on the y-axis when x=0?"
So make x=0 and whatever y is, that's the y-intercept.
A line with slope = m is perpendicular to what ever line has
the slope -1/m
say the equation is the most simple one

The y-intercept is whatever I get when x = 0.
that's the y-intercept
What's the line perpendicular to ?
is the general slope-intercept formula
How does it compare with ?

So 1 is the slope
any line perpendicular to it will have slope -1/m or -1/1
which is -1
Hope all this makes sense. Keep working at it.
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