Questions
The straight lines x + y = 0,3x + y = 0, and x + 3y - 4 = 0 form a triangle which is
a
isosceles
b
equilateral
c
right-angled
d
None of these
detailed solution
Correct option is A
Solving the given equations of lines pairwise, we get the vertices of triangle as A(1,2), B(2, -2), C(1,1). Then, AB=16+16=42BC=1+9=10CA=9+1=10Hence, the triangle is isosceles.Talk to our academic expert!
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The area of the triangle formed by the lines and the y-axis is equal to
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