It is irrational, because irrational numbers are ones that keep repeating at decimals and if you concert 43/99 to a decimal, it becomes 0.434343 and repeats on forever hope this helps you :)
Each of these equations follows the standard form: y = mx + b
The variable "m" is the slope, and the variable "b" is the y-intercept.
Therefore, with the equation y = 8/3x - 5, the slope ("m") would equal 8/3 and the y-intercept ("b") would equal -5