2y+x=4 equals what??
Im confused something about issolate variable
Problems of this type usually want the y variable
on the left side of the equation, and everything else
on the right side. You are solving for y in terms of x.
2y + x = 4
2y + x - x = 4 - x
2y = 4 - x
2y / 2 = (4 - x) / 2
y = 4 - 1/2 x
Convention puts the x term ahead of the constant, so
y = -1/2 x + 4
This just happens to be the equation of a line
in slope intercept form.