Question

(ii) A(4,7) and B(2, 1). P(3, a) is the midpoint of seg AB, then the value of a is___ (A) 4 (B) 6 (C) 3 (D) 8​

Answer 1

Answer:

I)4

Step-by-step explanation:

Using the mid point formula,

since we had given one value of x so we are only computing the value of y.

$y = \frac{y_2 + y_1}{2}$

$a = \frac{1 + 7}{2} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: (y = a)$

$a = \frac{8}{2}$

$\boxed{a = 4}$

Hence the value of a is 4

Hence option 1 is correct one