Answer:
y =
or y =
Explanation:
Standard equation is: y=
................(1)
The function passes through (0,15) and (2,240).
so, by putting x = 0 and y = 15, we get
15 =

a = 15
Also, putting x= 2 and y= 240, we get
240 =

240 =

=

= 14
b = 4 or b= -4
Putting the values of a and b in (1), we get
y =
or y =