SOLUTION: Got a couple questions. Solve and Graph 1. 5x+10y=-20 5/5=1 10/5=2 -20/5=-3 x+2y=-3 2y=x-3 <- Stuck here How to tell if something is linear? Minutes 4 9 14 21

Click here to see ALL problems on Linear-systems

Question 673677: Got a couple questions.
Solve and Graph

1. 5x+10y=-20
5/5=1
10/5=2
-20/5=-3
x+2y=-3
2y=x-3 <- Stuck here
How to tell if something is linear?
Minutes 4 9 14 21 27
Money 2.9 4.65 6.4 8.85 10.95
It is not linear because there is no direct correlation.
3. Solve 3/4 (5x-y)<3 for Y Graph the solution
Multiply by reciprocals
3/4*4/3
5x*4/3=20/3x
y*4/3=4/3y
20/x-4/3y<3 <- Stuck here

Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website!

Hi,
5x+10y=-20
x + y = -5
y = -x - 5 || (0,-5) and (-5,0) on this line. Plot, connect with line (Green Line)
need to Plot Points: they are Linear (Blue Line) y = .35x + 1.5
x y
4 2.9
9 4.65 y = .35x = b, use a Pt or find b
14 6.4
21 8.85
27 10.95
3/4 (5x-y)<3

5x - y < 4
5x-4 < y ||Line y = 5x-4 (0,-4) and (4/5,0) on this line
Plot points, connect with Line and "Shade above that Purple Line" to graph y>5x-4