SOLUTION: Please help me solve this,I am having a terrible time understanding this concept paired with actually graphing it...Thanks in advance! Graph the linear equation by solving for y

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Question 640730: Please help me solve this,I am having a terrible time understanding this concept paired with actually graphing it...Thanks in advance!
Graph the linear equation by solving for y first;
4x + 5y = -15
Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website!
Please help me solve this,I am having a terrible time understanding this
concept paired with actually graphing it...Thanks in advance!
Graph the linear equation by solving for y first;
4x + 5y = -15
For graphing we want to put this into the slope/intercept form (y=mx+b)
subtract 4x from both sides
5y = -4x - 15
Divide both sides by 5
y = x - 3
:
Select at least two values for x and solve for y, results:
x | y
-------
-5 | 1; (replace x with -5, -4(-1) - 3 = +4 - 3 = 1)
+5 |-7; (replace x with +5, -4(+1) - 3 = -4 - 3 = -7)
Graph these two points, should look like this

:
You can confirm this, replace x and y in the original equation x=-5, y=1
4x + 5y = -15
4(-5) + 5(1) = -15
-20 + 5 =