The line passing through the points (2,-a) and (a,1) is perpendicular to the line x-10y = 1. Find the value of "a" .
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Answer:
a=19/11
Step-by-step explanation:
from the give line
y= x/10 - 1/10
m=1/10 [slope]
from given points
slope m= (1+a)/(a-2)
when two lines are perpendicular product of slopes is -1
(1+a)/(a-2) × 1/10 = -1
1+a= 20-10a
11a=19
a=19/11
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