Question 209421: how do I find the slope of 3x-y=4 with out solving for y?
Found 2 solutions by rfer, RAY100:
Answer by rfer(16322)   (Show Source):
Answer by RAY100(1637) (Show Source):
You can put this solution on YOUR website! 3x-y=4,,,,obviously,,,3x-4=y,,,from y=mx+b,,,,m=3
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to find slope without this, try evaluating two points on graph
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when x=0,,y=-4,,,,,,,when x=1,,,,y=-1
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now,,,,m=(y2-y1)/(x2-x1) ={-4-(-1)}/{0-1} = -3/-1 = 3,,,,,,as above
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Remember the slope is rise over run, and we only have to review numerator if denominator is +1.,,,,,,,,(-1-(-4)) =3
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When there are negatives, however, it is best to use full formula
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