SOLUTION: Find the ares bounded by the graphs of: Y=x+4, Y=-3x, and the y-axis

Question 431945: Find the ares bounded by the graphs of:
Y=x+4, Y=-3x, and the y-axis
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Here's the graph:

I notice that goes through the origin,
because when , .
And, intersects the y-axis at
since .
------------------
Using substitution,

-----------
and

The lines meet at (-1,3)
The area is
would be the side on the y-axis,
The height would be the shortest distance
from (-1,3) to the y-axis, which is
(don't use (-) signs when finding distance)
So the area is

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