First, express it like:
y= (5/2)^x
Find the value of y for x=1
y= 5/2
(1,5/2)
Value for x= 0
y= 1
(0,1)
Value for x=-1
y= (5/2)^-1 = 2/5
(-1,2/5)
x=-5
y= (5/2)^-5 = 0.01024
(-5,0.01024)
GRaph the points and connect them.
Since it's an exponential function, it never crosses the x -axis.