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Answer:
see attached
Step-by-step explanation:
The scaling shown in the attachment is about as close as I can get using an on-line graphing program. You may fare better with graph paper. The vertex and x-intercepts are shown. The values at x=-3 and x=2 are y=11.
<em>Find the gradient of the line joining (-1,9) and (3,5)</em>
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Use the slope formula:-
Replace the letters with the numbers:-
On simplification,
On further simplification,