Coordinates, Lines & Graphs

An equation in two quantities describes coordinate pairs that satisfy a relationship, and slope measures a rate linking horizontal and vertical change.

What you'll learn

  • Read and plot ordered pairs with horizontal coordinate first.
  • Interpret a graph as the set of coordinate pairs satisfying a relationship.
  • Compute slope as vertical change divided by matching horizontal change.
  • Attach meaningful units to slope in context.
  • Distinguish a relationship's numerical slope from its apparent steepness under changing axis scales.

Before you start

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