SOLUTION: I have to solve the system for these two equations I'm stuck on what to do next: y=3/4x+2 and y=-3/4x+2

Algebra ->  Linear-equations -> SOLUTION: I have to solve the system for these two equations I'm stuck on what to do next: y=3/4x+2 and y=-3/4x+2      Log On


   



Question 107065: I have to solve the system for these two equations I'm stuck on what to do next:
y=3/4x+2
and
y=-3/4x+2

Answer by HyperBrain(694) About Me  (Show Source):
You can put this solution on YOUR website!
Since y=3x%2F4%2B2 and y=-3x%2F4%2B2,
3x%2F4%2B2=-3x%2F4%2B2
3x%2F4%2B2-2=-3x%2F4%2B2-2
3x%2F4%2B0=-3x%2F4%2B0
3x%2F4=-3x%2F4
4%283x%2F4%29=4%28-3x%2F4%29
3x=-3x
3x%2B3x=-3x%2B3x
6x=0
6x%2F6=0%2F6
x=0
Solving for y,
y=3x%2F4%2B2
y=3%2A0%2F4%2B2
y=0%2F4%2B2
y=0%2B2
y=2
GRAPH:
graph%281000%2C1000%2C-20%2C20%2C-20%2C20%2C-3x%2F4%2B2%2C3x%2F4%2B2%29

Look! They intersect at (0,2). This means that both solutions (algebraic and graphical) are correct!

Power up,
HyperBrain!