PointHard

Question

Points A & B are in the first quadrant ; point ′O′ is the origin. If the slope of OA is 1, slope of OB is 7 and OA = OB, then the slope of AB is -

Options

A.-1/5
B.-1/4
C.-1/3
D.-1/2

Solution

     
mOA = 1, mOB = 7
Let mAB = m
AO = OB
⇒    ∠OBA = ∠OAB
    ⇒m = -, 2
but slope of AB is negative  m = -

Create a free account to view solution

View Solution Free
Topic: Point·Practice all Point questions

More Point Questions

The distance of orthocentre of the triangle (2, 3), (4, 5) and (−1, 10) from (2, 3) is -...The locus of a point, which moves in such a way that its distance from the origin (0, 0) is thrice the distance from x a...Distance of the point (2, 5) from the line 3x + y + 4 = 0 measured parallel to the line 3x - 4y + 8 = 0 is -...The line 3x + 2y = 6 will divide the quadrilateral formed by the lines x + y = 5, y - 2x = 8, 3y + 2x = 0 & 4y - x = 0 i...An equilateral triangle whose orthocentre is (3, −2), one side is on x- axis then vertex of triangle which is not ...