Question

How do you find the slope of `y=4/5`?

Answer 1

This function is constant, so `"slope" = 0`.

Explanation:

graph{0x +4/5 [-10, 10, -5, 5]}

As we can see on the graph, `y` is always the same. It happens because there isn't a `x` present in the function `y = 4/5`.

Now you may think that it is true, but it isn't. `x` actually is present, but it remains hidden beucase `x*0` or any number multiplied by 0 equals 0.

So, when you see any function that `x` is not visually appearing, remember that it is there, but its `"slope" = 0`.

Hope you understand!