Question

plot the points (-3,0),(5,0) (0,4) on cartesian plane.name the figure formed by joining these points and find its area

Answer 1

hey friend,
firstly you will need a cartesian plane that is a graph and you should plot it on the graph I hope you know how to plot them..
so after plotting the points on a graph we get a triangle

we know the area of the triangle =1\2×b×h

=1\2×8×4
=16 unit^2
please mark it the brainliest

Answer 2

it's a triangle
a(tri.)=
$\frac{1}{2} (x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)) \\ \frac{1}{2} ( - 3(0 - 4) + 5(4 - 0) + 0(0 - 0)) \\ \frac{1}{2} ( - 3( - 4) + 5(4) + 0) \\ \frac{1}{2} (12 + 20) \\ \frac{1}{2} \times 32 \\ = 16sq.unit$