Question

If the middle point of the line segment joining the points (5, a) and (b, 7) be (3, 5), then (a, b)=

• A. (3, 1)
• B. (1, 3)
• C. (–2, –2)
• D. (–3, –1)

Answer 1

Answer: (A)

(3, 1)

Answer 2

P is the mid point of A and B

\ $\frac{5 + b}{2}$= 3 and $\frac{a + 7}{2}$ = 5

\ b = 1 and a = 3

(a, b) = (3, 1).