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8th Grade Math (Math 8) · Chapter 4 · Lesson 4.7 · Printable PDF

Recognizing a Proportional Relationship in a Graph Worksheet with Answer Key

5 problems on recognizing a proportional relationship in a graph: points through the origin, picturing graphs of situations, copper wire mass, three kinds of rope, and boxes stacked on a shelf. 4 pages, with a worked answer key.

5 problems4 pagesanswer key
Printable Recognizing a proportional relationship in a graph worksheet with answer key - 8th Grade Math (Math 8) (Page 1 PDF preview)
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Try one first: a free Chapter 1 worksheet (PDF, no sign-in).

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What's on the worksheet

  1. Decide if each list of points lies on a line through the origin, and give the constant:
    (0, 0), (3, 4.5), (5, 7.5), (8, 12)(2, 7), (4, 13), (6, 19), (10, 31)(0, 0), (2, 2), (4, 8), (6, 18)(5, 2), (10, 4), (15, 6), (25, 10)(0, 0), (4, 6), (8, 12), (12, 17)
  2. Picture each graph and decide if it is a straight line through the origin:
  3. Word problem: mass of a copper wire against its length.
  4. Read a graph of the cost of three kinds of rope and decide which are proportional.
  5. Word problem: the height of Isaac's stack of boxes on a shelf.

Teach it first

The free lesson teaches it with worked examples and practice problems.

Recognizing a proportional relationship in a graph: the lesson ›

More Chapter 4 worksheets: Proportional relationships and slope