Question

Solve the following pair of linear equations using graphical methods .1) 2x+ y = 10 , x+ y = 6

Answer 1

Answer:

2x +y =10 -(1)

x+y =6 -(2)

(1)*1= 2x+y=10

(2) *2= 2x+2y=12

( -) (-) (-)

__________

y=2

sub y=2 in(1)

2x+y=10

2x+2=10

2x=10-2

2x=8

x=8/2

x=4