Slope & Linear Relations · Grades 99

Slope & Linear Relations Worksheets

Rise over run, or change in y over change in x. Grade 9 worksheets for finding the slope of a line from two points.

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What it is

Slope measures the steepness of a line: how much it rises for each unit it runs. m = (y₂ − y₁) ÷ (x₂ − x₁).

Why it matters

Slope is the foundation of linear relations, graphing, and rates of change, the core of Grade 9 math and everything built on functions afterward.

How to do it

  1. Label your two points (x₁, y₁) and (x₂, y₂).
  2. Subtract the y-values for the rise, and the x-values (in the same order) for the run.
  3. Divide rise by run and simplify the fraction.

Examples by level

  • BeginnerSlope through (5, 0) and (6, 1) =1
  • IntermediateSlope through (-4, 0) and (-6, 10) =-5
  • AdvancedSlope through (6, 2) and (-7, 4) =-2/13

Examples are generated by the same engine as the worksheets, so they're always mathematically correct. Built to avoid repeats, not reshuffle the same handful of questions.

Common mistakes

  • Subtracting coordinates in a different order top and bottom.
  • Mixing up rise and run.
  • Forgetting to simplify the fraction.

Tips

  • Subtract the coordinates in the same order top and bottom.
  • A negative slope falls left to right; zero slope is flat.

For parents

Say it out loud: 'change in y over change in x.' Keeping the order consistent avoids sign errors.

For teachers

Connect slope to real rates (speed, cost per unit) so it isn't just a formula.

Key vocabulary

slope
rise over run
rise
change in y
run
change in x

Frequently asked questions

How do you find slope from two points?
Subtract the y-values for the rise, subtract the x-values in the same order for the run, then divide and simplify.
What does a negative slope mean?
The line falls from left to right; a positive slope rises, and a zero slope is horizontal.

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