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Question : 80 of 150
Marks:
+1,
-0
Solution:
Given,
A=(1,−3) and
B(4,3) and
y=x−‌We know that,
Slope of tangent
= Slope of
ABmAB=‌=‌=2⇒‌‌mT=2y=x−‌‌=1+‌‌‌ [slope of tangent]
‌⇒‌‌‌=1−4(−‌)=2‌⇒‌‌1+‌=2‌⇒‌‌‌=1‌⇒‌‌x2=4⇒x=±2So,
y=0, at
x=2 and
y=0, at
x=−2P(2,0),Q(−2,0)
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