Question

9. Solve the following system of linear equations graphically.
x + y = 5
3x - y = 1​

Answer 1

1)

x + y = 5

x = 5 - y

if y = 3 then x = 2

if y = 2 then x = 3

if y = 0 then x = 5

2)

3x - y = 1

3x - 1 = y

y = 3x - 1

if x = 1 then y = 2

if x = 0 then y = -1

if x = -1 then y = -4