SOLUTION: A line through (1,-2) and (3,1) is perpendicular to a line through (2,y) and (1,-2). Find the value of y.
Algebra.Com
Question 965226: A line through (1,-2) and (3,1) is perpendicular to a line through (2,y) and (1,-2). Find the value of y.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Slope of line through ( 1,-2 ) and ( 3, 1 ):
------------------------------------
Slope of line through ( 2,y ) and ( 1, -2 ) :
--------------------------
If the 1st slope is and the 2nd
slope is , then to be perpendicular
to each other:
, so I can say:
-------------------
check answer:
OK
RELATED QUESTIONS
A line through points (-2, 3) and (1, b) is perpendicular to the line
y = (1/2)x-1. The (answered by josgarithmetic)
the line y=ax+b is perpendicular to the line y-3x=4 and passes through point (1,-2). Find (answered by Fombitz)
please help.
A line passing through (-10,-1)and (-8,y) is perpendicular to a line with (answered by scott8148)
find the value of Y so that the line through (-2,-1) and (10,y) is perpendicular to the... (answered by malakumar_kos@yahoo.com)
A line through points (-2, 3) and (1, b) is perpendicular to the line
y = (1/2)x-1. The (answered by ewatrrr)
A line through (-5, -4) and (-1, y) is perpendicular to a line with slope -2/3. What is... (answered by solver91311,greenestamps)
Find the equation of the line passing through (-1, 2) and perpendicular to y = 3x +... (answered by Alan3354)
Find the equation of the line passing through (-1, 2) and perpendicular to y = 3x + 5.
(answered by jim_thompson5910)
6. Find the equation of the line passing through (-1, 2) and perpendicular to y = 3x (answered by MathLover1)