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Graphical Solutions to Quadratic Equations worksheet

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.

x -5 -4 -3 -2 -1  0   1   2   3   4   5 
y 22 12 12
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Table of values for y=x^2-x-8
x -5 -4 -3 -2 -1  0   1   2   3   4   5 
y 22 12 4 -2 -6 -8 -8 -6 -2 4 12
The roots of the function are -2.4 and 3.4


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