From “Precalculus for Christian Schools”, a textbook published by Bob Jones University. The book is designed to help students “conform their thinking to biblical precepts.”
A line can be described either by its slope (a ratio) or by its inclination (an angle). These terms describe the deviation from the horizontal, but the word inclination also has a nonmathematical meaning. Without Christ, man is inclined to sin. The Word of God should shape our attitudes (inclinations).
Woah. I wonder what my grade 12 Math teacher would say, no doubt he is turning in his grave.