Is the function described by the points in this table linear or nonlinear? x y
−3 9
−1 1
0 0
1 1
3 9

nonlinear

linear

How to simply and write the answer n a whole number

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?

Which is the focus of a parabola with equation y2=4x