Yes, y=-2+x is a linear function.
It is not a linear function because it is missing x as the input variable
No, it is not.
Only if it's a function.
No. 1a and 3d are linear, but 2bc is not. ■
The rate of change for the linear (not liner) function, y = 2x +/- 3 is 2.
It is a linear function. That is to say, it is a function representing a straight line in the coordinate plane.
A linear relationship. Added: And a function.
Yes, y=-5x+3 is a linear function. We know that by two factors. First, if you plot the function, you find that it draws a straight line, hence the term linear. Second, if you inspect the non-constant terms, you find that all of the are in the first power, i.e. there are no "squareds", "cubes", square roots", etc. This also makes it s linear function.