How do you solve the following linear system: 2x+y=0, y = 4x - 3 ?

1 Answer
May 29, 2018

x=1/2 & y=-1

Explanation:

The way is very simple. Just eliminate one of the variable by substituting its value in the other equation.
2x + y =0 ——— (i)
y=4x-3 ——— (ii)

Using the value of ‘y’ from equation (ii), we have :-
2x +(4x-3) =0
i.e., x=1/2
Now put the value of x in any of the equations to get the value of y.

:. x=1/2 and y=-1

Hope it helps :)