NCERT Class XI Mathematics - Straight Lines - Solutions

Question : 5

Total: 74

Find the slope of a line, which passes through the origin and the midpoint of the line segment joining the points P(0, –4) and B(8, 0).

Solution:

We are given that P(0, –4) and B(8, 0).
Let A be the midpoint of PB, then A = (

8+0

−4+0

) = (4, - 2)
Slope of OA =

−2−0

4−0

−1

Since The line passes through origin

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