1) On the same set of axes draw the graphs of y = -2x2 + 3x + 9 and y = 3x + 1 for values of -3 = x =3. Hence find the values of x where the two lines intersect.
Solution:
First get the table of the variables as shown
| X | -3 | -2 | -1 | 0 | 1 | 2 | 3 |
| -2x2 | -18 | -2 | 0 | -8 | |||
| 3x | -6 | 0 | 3 | 9 | |||
| 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| y | 9 | 10 | 7 | 0 | |||
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