Question

Solve graphically the equations x+2y=8 and y_x=1

Answer 1

x+2y=8

x=8-2y ------------1.

for this,

If y=0,then x=8-2(0) =8-0=8 (8,0)

If y=1,then x=8-2(1)=8-2=6 (6,1)

If y=2,then x=8-2(2)=8-4=4 (4,2)

y-x=1

y=1+x --------------2.

for this,

If x=0,then y=1+0=1 (0,1)

If x=1,then y=1+1=2 (1,2)

If x=2,then y=1+2=3 (2,3)

now plot this point on the graph