Answer:
Yes, it is a one-to-one function.
Step-by-step explanation:
If every element of the range of the function corresponds to exactly one element of the domain, then the function is called one-to-one.
A linear function is always a one-to-one function. It means all straight lines represent one-to-one function, except the vertical or horizontal lines.
It is given that a decreasing line intercepting the y axis at (0,4). We need to check whether it is a one-to-one function or not.
Since, all increasing or decreasing lines represent the one-to-one function, therefore the given function is also a one-to-one.
