SOLUTION: Please help me find the standard form of the equation of the line that is perpendicular to y=7/2x-5 and contains (-3,-7) A.7x+2y=21 B.3x-7y=21 C.2x-7y=55 D.2x+7y=-55

Question 550326: Please help me find the standard form of the equation of the line that is perpendicular to
y=7/2x-5 and contains (-3,-7)
A.7x+2y=21
B.3x-7y=21
C.2x-7y=55
D.2x+7y=-55

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Please help me find the standard form of the equation of the line that is perpendicular to y=7/2x-5 and contains (-3,-7)
=====
The given line has slope = 7/2
----
Any perpendicular line must have slope = -2/7
-------
Form:
Solve for "b":
y = mx+b
-7 = (-2/7)(-3)+b
---
-7 = 6/7 + b
b = -55/7
----
Equation:
y = (-2/7)x-(55/7)
7y = -2x - 55
=====================
Cheers,
Stan H.
=====================

A.7x+2y=21
B.3x-7y=21
C.2x-7y=55
D.2x+7y=-55

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