Help with substitution show work please

Solution of given system of equations is: x=4, y=-2 or (4,-2)

Step-by-step explanation:

Solve the equation using substitution

4x+y=14

x-2y=8

Substitution method involves placing value of x or y from one equation to other equation.

We have

Finding value of x from equation 2

x-2y=8

x=2y+8

Put this value of x in equation 1

We get y=-2

Now, put value of y into equation 2 to find value of x

We get x = 4

So, solution of given system of equations is: x=4, y=-2 or (4,-2)

II quadrant or IV quadrant

Step-by-step explanation:

we know that

In the I quadrant

The x-coordinate and the y-coordinate are both positive

In the II quadrant

The x-coordinate is negative and the y-coordinate is positive

In the III quadrant

The x-coordinate and the y-coordinate are both negative

In the IV quadrant

The x-coordinate is positive and the y-coordinate is negative

therefore

If the coordinates of an ordered pair have opposite signs, then the ordered pair must lie in the II quadrant or in the IV quadrant