The function that is given has a constant value and therefore, its slope is 0.
0.2
0.6667
40
3 over 5 is the same as 9 over 15 so x = 7 over 15.
1/2 + 1/2 + 2/3 = 1 2/3 or one and two thirds.
0.4
1/12
2/7
17/5
2/4 = 1/2
8 and 1/3 percent
There are infinite but one of them is 4/6.