Question

how do I solve this equation using graphical method
y=8-x;y=2x-1

Answer 1

Answer:

x=3, y=5

Step-by-step explanation:

the eqn. becomes

x+y=8

2x-y=1 y and -y will cancel each other

---------

3x=9

x=3

now x+y=8

3+y=8

y=5

Answer 2

Answer:

as y=8-x;y=2x-1

y=y

therefore

8-x =2x-1

=>3x=9

=> x=3

y=(8-3) or {(2×3)-1}