Asked by Anal-G
write the equation of a line through (4,1) and:
A. parallel
B. perpendicular to the line through (7,3) and (5,-1).
=Express the equation in 5 different forms.
please help!!
A. parallel
B. perpendicular to the line through (7,3) and (5,-1).
=Express the equation in 5 different forms.
please help!!
Answers
Answered by
drwls
A. The line through (7,3) and (5,-1)has slope
m = (y2-y1)/(x2-x1) = (-4)/(-2) = 2
To pass through (4,1) and be parallel to the given line, the equation must be
(y-1)/(x-4) = 2
y - 1 = 2x -8
y = 2x -7
I don't see why they need 5 variations of that. I'll leave that up to you.
One could be 2x -y = 7
B) To be perpendicular to the given line, the slope must be m = -1/2.
Proceed as in part A.
m = (y2-y1)/(x2-x1) = (-4)/(-2) = 2
To pass through (4,1) and be parallel to the given line, the equation must be
(y-1)/(x-4) = 2
y - 1 = 2x -8
y = 2x -7
I don't see why they need 5 variations of that. I'll leave that up to you.
One could be 2x -y = 7
B) To be perpendicular to the given line, the slope must be m = -1/2.
Proceed as in part A.
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