The function is going to be f(x)=5^x. This is known as 5 raised to the Xth power. you can derive this information because when x=1, the y coordinate is 5. When x=0, the y coordinate is equivalent to 1. Any number raised to the 0th power is 1. Also, any number raised to a negative exponent makes it x^-y 1/x^y if x is the integer and y are the exponents.
