Question

Using a graphical method, solve the simultaneous equations
X + y = 4
and
y = 2x+ 1

Answer 1

x= 1, y=3

Explanation:

x + (2x+1)= 4

3x+1=4

3x=4-1

x=1

Take x as 1

1 + y =4

y=4-1

y=3