SOLUTION: -5x+3y=-7.5 solve for x and y then gragh.

Algebra ->  Linear-equations -> SOLUTION: -5x+3y=-7.5 solve for x and y then gragh.      Log On


   

Question 1151295: -5x+3y=-7.5 solve for x and y then gragh.
Found 2 solutions by josmiceli, MathLover1:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+-5x+%2B+3y+=+-7.5+
Subtract +3y+ from both sides
+-5x+=+-4y+-+7.5+
Divide both sides by +-5+
+x+=+%284%2F5%29%2Ay+%2B+1.5+
+x+=+.8y+%2B+1.5+
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Now I'll solve fro +y+ and graph
Subtract +1.5+ from both sides
+.8y+=+x+-+1.5+
Divide both sides by +.8+
+y+=+1.25x+-+1.875+
Here's the plot:
+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C+1.25x+-+1.875+%29+

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
-5x%2B3y=-7.5
this is linear equation and graph will be a line
all you need is two points to graph that line
make table: easiest way is to find intercepts
x |+y
0 |+-2.5 ->-5%2A0%2B3y=-7.5->3y=-7.5->y=-7.5%2F3->y=-2.5
1.5 |+0 ->-5x%2B3%2A0=-7.5->-5x=-7.5->x=-7.5%2F-5->x=1.5
plot points and draw a line through