SOLUTION: This is from a worksheet: Graph this equation: 3y-9x=30 Then must graph this equation. Thanks very much!

Question 91584: This is from a worksheet:
Graph this equation: 3y-9x=30
Then must graph this equation.
Thanks very much!
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Graph this equation: 3y-9x=30
Then must graph this equation.
:
Put equation into the slope intercept form y = mx + b
:
3y = +9x + 30; added 9x to both sides
1y = (9/3)x + (30/3); divided equation by 3
y = 3x + 10
:
Substitute for x, -4 to +4 and make a table of x/y coordinates to graph
Here is x = -4 as an example:
y = 3(-4) + 10
y = -12 + 10
y = -2
:
x | y
--------
-4 | -2
-3 |
-2 |
0 | 10
+1 |
+2 |+16
+3 |
+4 | 22
I'll let you fill in blanks, find y from the value given of x
:
graph should look like this:

:
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