Yes it is a function. In standard form it is y=x-4.
It is: y = -2/3x+4 in slope intercept form
y=3x+12
y(x) = (4 - x)/4.
y = -x-2
Y = 2X + 8 is a linear function of the form, Y = mX + c. A line.
It is a quadratic function which represents a parabola.
a = 0, b = 0.
Only if it's a function.
5x + 5y = 19x = 3.8 - yory = 3.8 - x
Yes.
yes