Question 772649
find the Y-intercept and the X-intercept (the point where the line crosses the X axis) for the line determined by the points (1,-2) and (3,4)?
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1st: Find the equation of the line:
slope = (4--2)/(3-1) = 6/2 = 3
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Form: y = mx + b
Solve for "b":
4 = 3*3+b
b = -5
Equation:
y = 3x -5
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2nd: Find the intercepts::
x-int::::  ???
Let y = 0, then x = 5/3
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y-int::: ???
Let x = 0, then y = -5
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Cheers,
Stan H.
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