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8th grade (Illustrative Mathematics)

Unit 3: Lesson 5

Lesson 9: Slopes don't have to be positive
Math
8th grade (Illustrative Mathematics)
Unit 3: Linear relationships
Lesson 9: Slopes don't have to be positive
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Slope from graph

CCSS.Math: 8.F.B.4, HSF.LE.A.2
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Problem

A coordinate plane. The x- and y-axes each scale by one. A graph of a line intersects the points zero, negative three and one, negative one.
What is the slope of the line?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
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