SOLUTION: I do not really understand how to solve this. The question says: "Graph the line passing through (2,4) tbat is perpendicular to the graph of y=-3"

Algebra ->  Linear-equations -> SOLUTION: I do not really understand how to solve this. The question says: "Graph the line passing through (2,4) tbat is perpendicular to the graph of y=-3"       Log On


   

Question 387190: I do not really understand how to solve this.
The question says: "Graph the line passing through (2,4) tbat is perpendicular to the graph of y=-3"
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
A line is perpendicular to another line if their slopes are related this way:
m%5B1%5D+=+-1%2Fm%5B2%5D
where m means slope of the line(s)
It is given that a line has the equation y+=+-3
You usually find m by comparing the given equation
with the general equation y+=+mx+%2B+b, but what
you have is more like y+=+b where b+=+-3,
so m%5B2%5D must be zero.
What is m%5B1%5D?
m%5B1%5D+=+-1%2F0
m%5B1%5D = infinity, or a vertical slope.
So, you have a vertical line that goes through (2,4).
All vertical lines have the form x+=+k
From (2,4), I see that the line is x+=+2