Question

Find the value of m for which the points (7, 2), (5, 1) and (3, m) are collinear.​

Answer 1

Answer: Now if these points are collinear then,

, 7/2×5/1×3/m×7/2..(1)

Now do cross multiply of 1

Now, 1/2(7×1+5×m+3×2) -(5×2+3×1+7×m) =0

Now, (7+5m+6) -(10+3+7m) =0

Now, 13+5m-13-7m=0

, 13-13+5m-7m=0

-2m=0

m=2

Step-by-step explanation: