SOLUTION: How do i solve 3x+3y=12, x-7/2=0, x=5y=16, 3/4x+y/2=6 i have to graph these. explain please . I don't get how my teacher explained it so i hope u can help m

Question 23859: How do i solve
3x+3y=12,
x-7/2=0,
x=5y=16,
3/4x+y/2=6
i have to graph these. explain please . I don't get how my teacher explained it so i hope u can help me.
Answer by elima(1433) (Show Source): You can put this solution on YOUR website!
There are different ways to solve these;
One way;
Put the equation in slope-intercept form;
y=mx+b
m=slope
b=y-intercept
3x+3y=12
subtract 3x from both sides;
3y=12-3x
Now divide each side by 3
=-
y=4-x
Put this in correct form;
y=-x+4
Solve eqution for y, make x=0;
y=-(0)+4
y=4
Now solve for x and make y=0;
0=-x+4
-4=-x
4=x
So now plot those points on the graph and connect with a line.
Try and solve the others on your own, if you have problems, let me know
=)

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