Question

If A (4, -8), B(-9, 7) and C(18, 13) are the
vertices of a AABC, then​

Answer 1

Step-by-step explanation:

Let A(1, −3), B(4, p) and C(−9, 7) be the vertices of the ∆ABC.

Here, x1 = 1, y1 = −3; x2 = 4, y2 = p and x3 = −9, y3 = 7

ar(∆ABC) = 15 square units

 or 

Hence, the value of p is −3 or −9.