Question

(i) x + y = 7; x − y = 3 graph

Answer 1

Answer:

Step-by-step explanation:

x+y=7eq 1

And

x-y =3 eq 2

by elimation method

x+y=7

x-y=3

...........

2x=10

x=5

put the value of y in any eq1

x+y=7

5+y=7

Y=2

so

(5,2)

Answer 2

let x = 7
y = 3
x+y
7+3 = 10
x -y
7-3 = 4