Question

If the points A(x,2)B(-3,-4)and C(7,-5) are colinear then find the value of X

Answer 1

Eq for line BC.....
x1=-3..........y1=-4

x2=7...........y2=-5
slope=(y2-y1)/(x2-x1)=(-5+4)/(7+3)=-1/10
equation...=y-y1=slope(x-x1)
y+4=(-1/10)*(x+3)
10y+40=-x-3
x+10y=-43.....①

coordinates of A=(x,2)
as the lines are collinear so value of x=x and y=2 will satisfy the eq.①
x+10*2=-43
x+20=-43
x=-63

Answer 2

Hi friend,
====>>>>>>>========>>>>>>Your answer is

value of x== -63