Question

Write four solution for each of the following equation :
1. 2x + y = 7​

Answer 1

Answer:

x+y=7/2

y=7-2x

2x=7-y

2x+y-7=0

Answer 2

Answer:

let x = 1

2(1) + y = 7

y = 7-2

y = 5

let x = 2

2(2) + y = 7

y = 7-4

y = 3

let x = 3

2(3) + y = 7

y = 7-6

y = 1

let x = 4

2(4) + y = 7

y = 7-8

y = -1

(1,5) (2,3) (3,1) (4,-1)