find_the_slope.md

Find the Slope

Description

Given an array of 4 integers [a,b,c,d] representing two points (a, b) and (c, d), return a string representation of the slope of the line joining these two points.

For an undefined slope (division by 0), return undefined. Note that the "undefined" is case-sensitive.

a:x1
b:y1
c:x2
d:y2

Assume that [a,b,c,d] and the answer are all integers (no floating numbers!). Slope: https://en.wikipedia.org/wiki/Slope

My Solution

def find_slope(points)
  x1, y1, x2, y2 = points
  ((y2 - y1) / (x2 - x1)).to_s
rescue
  'undefined'
end