Question

the area of triangle formed by the points( 1 ,2 ),(2 ,3 ),(x ,4) is 40 square units then x is​

Answer 1

Sorry for weird perspective. Also tell me if I'm wrong cause I am not 100% sure.

Answer 2

x= -77

Step-by-step explanation:

we have to find the value of x

$x_1=1,y_1=2\\\\x_2=2,y_2=3\\\\x_3=x,y_3=4\\\\A = \frac{1}{2}(x_1(y_2-y_3)+x_2(y_3-y_1)+ x_3(y_1-y_2))\\\\40 = \frac{1}{2} (1(3-4)+2(4-2)+x(2-3))\\\\80 = (-1+2(2)+x(-1))\\\\80 = -1+4-x\\\\80=3-x\\\\77=-x\\\\x=-77$

hence , The value of x is -77

#Learn more :

If the points are collinear then the area of triangle formed

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