solve the following system graphically. Check your solution.
3x+y=9
-2y=x-8
I know im supposed to put it in y=mx+b form but i don't know how to.
remember, you need only two points to draw a straight line.
A quick way to find any two points is to use the intercepts.
for 3x+y=9
let x=0 ---> y = 9
let y=0 ---> x = 3 , so we have two points (0,9) and (3,0)
for -2y = x-8
let x=0 ---> y = 4
let y=0 ---> x = 8
so we have points (0,4) and (8,0) for the second equation
using good graph paper draw the lines for each of those pairs of points.
Where they intersect becomes your solution.
Did you get (2,3) ?