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Grade 9 · Math · Algebra 1

9th grade Shifts, flips and stretches of a function worksheet

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Shifts, flips and stretches of a function

Grade 9 Math Worksheet

NameDate

Circle the best answer, or write your answer on the line.

  1. Noah marks (-3, -2) on f, a toy train track. The new graph is g(x) = f(x − 1) + 6. Which point is on g? Write it like (7, -3).

  2. Ren flips f for a mirror puzzle. (3, -2) is on f, and g(x) = −f(x). Which point is on g? Write it like (7, -3).

  3. Zee flips f for a leaf pattern. (2, 6) is on f, and g(x) = f(−x). Which point is on g? Write it like (7, -3).

  4. Ari flips f for a snowflake design. (-5, -1) is on f, and g(x) = f(−x). Which point is on g? Write it like (7, -3).

  5. Esme stretches f for a rocket path in a game. (5, -2) is on f, and g(x) = 3f(x). Which point is on g? Write it like (7, -3).

  6. Jun stretches f for a tent roof sketch. (-1, -3) is on f, and g(x) = 4f(x). Which point is on g? Write it like (7, -3).

  7. Kira squashes f for a flatter umbrella top. (-6, 10) is on f, and g(x) = (1/2)f(x). Which point is on g? Write it like (7, -3).

  8. Read this first

    Use this

    Coordinate grid, all four quadrants, each square one unit, -10 to 10 on both axes. The graph of f is drawn; g is not drawn.

  9. Luz slides f 4 units left and 1 unit up for a new castle level. Which rule gives the new graph g?

    • g(x) = f(x + 1) + 4
    • g(x) = f(x − 4) + 1
    • g(x) = f(x + 4) + 1
  10. Milo slides f 2 units right and 5 units down for a river level. Which rule gives the new graph g?

    • g(x) = f(x + 2) − 5
    • g(x) = f(x − 2) − 5
    • g(x) = f(x − 5) − 2
  11. Noah slides f 3 units left and 6 units down for a snow level. Which rule gives the new graph g?

    • g(x) = f(x + 6) − 3
    • g(x) = f(x − 3) − 6
    • g(x) = f(x + 3) − 6
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9th grade Shifts, flips and stretches of a function worksheet – printable
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About this worksheet

Shifts, flips and stretches of a function. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can say how g(x) = f(x − 5) or g(x) = f(x) + 2 moves the graph of f.
  • I can find where a point of f lands on g for shifts, flips (−f(x), f(−x)) and stretches (3f(x)).
  • I can write the rule for a moved graph, find c from a before | after table, and rewrite a shifted line.

Standard: F-BF.B.3

Words to know

shift (translation): Sliding the whole graph left, right, up or down.

reflection (flip): A mirror image of the graph across the x-axis or the y-axis.

stretch: Multiplying every output by the same number.

inside / outside: Inside the brackets with x, as in f(x − 3); outside, as in f(x) + 2.

Common mistakes

Your child moved the graph the wrong way left or right. g(x) = f(x − 3) moves the graph right 3, because x = 3 makes the inside 0.

Your child mixed up a left-right move and an up-down move.

Your child added the number in front of f instead of multiplying by it.

What to say

Ask: which x-value makes the inside 0?

Ask: is the number inside the brackets with x (left or right), or outside f (up or down)?

Ask: does 3f(x) mean 3 plus f(x), or 3 times f(x)?

Questions parents ask

What is the most common mistake with shifts, flips and stretches of a function?

Your child moved the graph the wrong way left or right. g(x) = f(x − 3) moves the graph right 3, because x = 3 makes the inside 0.

How can I help my child with shifts, flips and stretches of a function?

Ask: which x-value makes the inside 0?

Are these 9th grade math worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

More algebra 1

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