Question

Given below is a graph representing pair of linear equations in two variables X + Y =4, 2 x-Y= 2. Help me with the second question

Answer 1

triangle formed at co coordinate points (1,0),(2,2) and (4,0)...

area of triangle =1/2|x1(y2-y3)+x2(y3-y1)+x3(y1-y2)

=1/2|1(2-0)+2(0-0)+4(0-2)

=1/2|2+0-8|

=1/2|-6|

=1/2(6)

=3...

therefore, area of triangle=3units.square