Question

If the points a(x 2) b(-3 -4) c(7,-5) are collinear then find value of x

Answer 1

Answer:

x=-63

Step-by-step explanation:

if points a,b,c are collinear then ar(triangle ABC)=0

AR(triangle ABC)=1/2{x(-4-(-5)+(-3)(-5-2)+7(2-(-4)}

0=1/2{x(-4+5)-3(-7)+7(6)}

0={x+21+42}

0={x+63}

x=-63