Question

Which function is linear? y = 1/(x + 2) y = x + 2 y = 1/x + 2 y = (x + 2)/(x - 2)

Answer 1

Linear functions are the ones whose graph is a straight line. So if you graph all the answers into desmos you will see which ones are not linear.

y=x+2 is linear.

y=1/(x+2) is the same as y=1/x+2 and those are rational functions