Question

Solve the system of linear equations y=-x y=3x-4

Answer 1

For this equation you will have to substitute the y for (-x)
Therefore,
-x=3x-4
-x-3x=-4
-4x=-4
-4x/-4=-4/-4
X= 1

Answer 2

Answer:

On solving the system of linear equations y=-x  and y=3x-4 we get the values of x and y as -1 and 1 respectively.

Solution:

We are given two equations and asked to solve the system of linear equations.

The two given equation are

y = -x    --eq1

y = 3x-4   --eq2

Now we rearrange the eq1 so that we can substitute the value of x in eq2 and solve it.

Now rearranging the eq1 we have;

x=-y--eq3

now substituting eq3 in eq2 we get;

y=3(-y)-4

we now simplify the equation and solve for y

y=-3y-4

y+3y=-4

4y=-4

y = -1

Now we substitute the value of y in eq3 to get the value of x

x=-(-1)

x = 1

Therefore on solving the system of linear equations we get the values of x and y as -1 and 1 respectively.