Does the table below represent a linear or an exponential

function? Explain.

x=2,3,4,5
y=2.25, 3.375, 4.5, 5.625

(please help me);-;

It may be easier to check using fractions. The sequence is

9/4, 27/8, 9/2, 45/8
or,
18/8, 27/8, 36/8, 45/8
looks like it's linear, with slope = 9/8