Name: Date:
Complete the table of values for y=x^2-x-8 and draw the graph.
Use your graph to estimate the roots of the function to 1 d.p.
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Use your graph to estimate the roots of the function to 1 d.p.
x | -5 | -4 | -3 | -2 | -1 | 0 | 1 | 2 | 3 | 4 | 5 |
y | 22 | 12 | 12 |
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The roots of the function are -2.4 and 3.4
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Table of values for y=x^2-x-8x | -5 | -4 | -3 | -2 | -1 | 0 | 1 | 2 | 3 | 4 | 5 |
y | 22 | 12 | 4 | -2 | -6 | -8 | -8 | -6 | -2 | 4 | 12 |
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