Simplifie the ratio
4: 22: 30

Since all of the numbers share a common number that divides them, a simplified 4:22:30 ratio would be 2:11:15, as it would not be able to divide them further with the same number and still get whole numbers, or 1: 5.5: 7.5, if you wish to split them further to 1.

I’m pretty sure the slope would be 1 since the x and y values increase by 1