Question

Find the area of the triangle with vertices(3,4),(9,0),(-3,0)

Answer 1

Answer:

-24

Step-by-step explanation:

X1=3 X2=9 X3=-3)

Y1=4 Y2=0 Y3= 0

1/2 {x1(y2-y3) + x2(y3-y1) + x3(y1-y2)}

=1/2{3(0-0)+9(0-4)-3(4-0)

=1/2(0-36-12)

=1/2 ×(--48)

=-24