Finding the Rule or Formula (Grade 10 NSC Matric Mathematical Literacy): Flashcards

Sequence of numbers/events following a specific rule

A letter representing a number that can change

Input value you can choose or control

Output value that depends on independent variable

Values increase/decrease by same amount each time

$y = mx + c$

Constant difference (rate of change)

Starting value (y-intercept)

Fixed cost + (Cost per item × Number of items)

Check it works with the original data