Question

a
Find the value of 'k' if the Coordinates of the point
A(2,-2), B (-42) and cloz,k) :-
Rio​

Answer 1

Answer:

k = 4

Step-by-step explanation:

a1 = 2, b1 = -4, c1 = -7

a2= -2, b2 =2,c2=k

area of triangle = 1/2 a1(b2- c2)+ b1(c2-c1)+

c1(a2-b2)

0 = 1/2(2(2-k)+-4(k+2)+(-7)(-2-2)

0 = 1/2(4-2k-4k-8+28)

0 = 1/2(-6k+24) -----(i)

(i)/2----->

= 3k+12

3k = 12

k = 12/3

k = 4

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