SOLUTION: The point (-1, 8) is on a line that has a slope of -3. Is the point (4,-7) on the same line? Explain your reasoning.

Algebra ->  Rational-functions -> SOLUTION: The point (-1, 8) is on a line that has a slope of -3. Is the point (4,-7) on the same line? Explain your reasoning.       Log On


   

Question 915169: The point (-1, 8) is on a line that has a slope of -3. Is the point (4,-7) on the same line? Explain your reasoning.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Using the point slope form of a line, the equation would be,
y-8=-3%28x-%28-1%29%29
y-8=-3%28x%2B1%29
If the point is on the line, it satisfies the equation.
-7-8=-3%284%2B1%29
-15=-3%285%29
-15=-15
True, so (4,-7) is on the same line.
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