Answer:

Step-by-step explanation:
<em>4 : 6 = 2/3</em>
<em>8/3 : 4 = 2/3</em>
<em>16/9 : 8/3 = 2/3</em>
I also need help on this question. Someone please help out
A one to one function is a function where the output is mapped to a unique input.
Horizontal line test is used to check whether a function is one to one.
The required probability is:
(51.25 - 45)/(55 - 45)=0.625