Question 975969: find an equation that satisfies the given conditions
though (-1,-3) perpendicular to the line 2x+7y+9=0
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! find an equation that satisfies the given conditions
though (-1,-3) perpendicular to the line 2x+7y+9=0
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Find the slope of the line
2x+7y+9=0
Solve for y
y = (-2/7)x - 9/7
This is the slope-intercept form y = mx + b
m is the slope = the coefficient of x
m = -2/7
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The slope of lines perpendicular is the negative inverse, = +7/2
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Use m = 7/2 and the point (-1,-3)
y-y1 = m*(x-x1) where (x1,y1) is the point
y+3 = (7/2)*(x+1) is an equation.
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2y+6 = 7x+7
7x - 2y = -1 is another eqn of the same line.
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