Write an exponential function from a table, graph or story
Grade 9 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.
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Growth table
x y 0 6 1 24 2 96 3 384 Pia's class counts seedlings in a big tray. Every arrow in the growth table multiplies by the same factor. What is the factor?
Ren's star-sticker pattern grows each round. Every arrow in the growth table multiplies by the same factor. What is the factor?
Tala's puzzle game gives points for each level. Every arrow in the growth table multiplies by the same factor. What is the factor?
1 | 15; 2 | 45; 3 | 135; 4 | 405. Every arrow down the table: × 3. Ari's robot game table starts at x = 1. Every arrow is × 3. What is the starting amount, the value at x = 0?
1 | 21; 2 | 63; 3 | 189; 4 | 567. Every arrow down the table: × 3. Bo's seed-tray game table starts at x = 1. Every arrow is × 3. What is the starting amount, the value at x = 0?
1 | 36; 2 | 144; 3 | 576; 4 | 2304. Every arrow down the table: × 4. Jun's drum-beat table starts at x = 1. Every arrow is × 4. What is the starting amount, the value at x = 0?
0 | 4; 1 | 24; 2 | 144; 3 | 864. Every arrow down the table: × 6. Kira's bee-pattern drawing starts at 4 (row x = 0), and every arrow is × 6. What function fits the table? Start with y =.
0 | 5; 1 | 10; 2 | 20; 3 | 40. Every arrow down the table: × 2. Luz's pencil-pattern table starts at 5 (row x = 0), and every arrow is × 2. What function fits the table? Start with y =.
0 | 2; 1 | 14; 2 | 98; 3 | 686. Every arrow down the table: × 7. Milo's leaf-pattern table starts at 2 (row x = 0), and every arrow is × 7. What function fits the table? Start with y =.
0 | 8; 1 | 40; 2 | 200; 3 | 1000. Every arrow down the table: × 5. Noah's tree-branch table starts at 8 (row x = 0), and every arrow is × 5. What function fits the table? Start with y =.

