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Question 51410: Please Help. My Problem is to graph by first solving for y. The equation is x + 2y = 8. I am completely lost here.
Found 2 solutions by music974, rchill:
Answer by music974(43)   (Show Source):
You can put this solution on YOUR website! Well if you were going to graph then we must turn this into y=mx+b form. So first subtract x from both sides to get 2y=8-x. Now divide each side by 2 to get y=4-1/2x. Now we are ready to graph. We need three points so we are going to substisute 0 into x. So if x=0 then y=4. Now if x=2 then y=3 and lastly if x=-2 then y=5. So to graph your ordered pairs would be (0,4),(2,3) and (-2,5). Hope this helps!!
Answer by rchill(405) (Show Source):
You can put this solution on YOUR website! Always solve for y first; if there is no y, solve for x. So, we first subtract x from both sides:  , which simplifies to  . Now divide both sides by 2:  , which simplifies to  .
Because any two points define a straight line, we need to get two ordered pairs in order to plot and draw the line. Using  produces  , so our first ordered pair is (0,4). Now let's use  to produce  , which simplifies to  , or  . Our second ordered pair is now (8,0). We plot those two points, and then draw a line between them.
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