The slope measures the "Steepness" or the rate of change.
Here is how the major pillars of microeconomics translate into simple mathematical language. microeconomics with simple mathematics pdf
To demonstrate the power of simple mathematics, here is a condensed mini-lesson. You could copy this into a document and save as a quick-reference PDF. The slope measures the "Steepness" or the rate of change
The rational consumer maximizes satisfaction when: $$\fracMU_xP_x = \fracMU_yP_y$$ A microeconomics with simple mathematics pdf will provide
Where $MU$ is Marginal Utility (the additional satisfaction from one more unit). Calculating MU is simple subtraction:
A microeconomics with simple mathematics pdf will provide tables of numbers, asking you to find the utility-maximizing combination given a budget. This is purely arithmetic.