Question

Q
a
the points A(a,-11) B(5, b), C(2, 15)
and D(1, 1)
are
the vertice
parallelogram ABCD, find values of a and b​

Answer 1

Answer:

answer is a(a,-11)

Step-by-step explanation:

I think is it right answer

Answer 2

Answer:

Step-by-step explanation:

Slope of PQ=SR

(a-5)/(-11-b)=(1–2)/(1–15)

a= -(b+11)/14 +5 …..(1)

Slope PS=QR

(a-1)/(-11–1)=(5–2)/(b-15)

(b-15)((b+11)/14–4)=36

(b-15)(b-45)=36*14

b^2–60b+171

Sol : b = (60+/-54)/2

b=3, a=4,

b=57, a=69/7

I hope you are happy!!