Question

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Answer 1

we have to compute this ratio:
\[\Large \frac{{f\left( 7 \right) - f\left( 4 \right)}}{{7 - 4}}\]
where:
\[\Large f\left( x \right) = {\left( {x - 12} \right)^2} + 9\]

Answer 2

no, since we have to compute f(4) and f(7). In order to that we have:
\[\Large f\left( 4 \right) = {\left( {4 - 12} \right)^2} + 9 = ...?\]
please compute

Answer 3

That's the graph

Answer 4

please @DaWizjr the helper can not give the direct answer, since the Code of Conduct

Answer 5

k

Answer 6

ok now we have to compute this quantity:
\[\Large f\left( 7 \right) = {\left( {7 - 12} \right)^2} + 9 = ...?\]

Answer 7

ok!

Answer 8

now we have to substitute into that ratio above:
\[\Large \frac{{f\left( 7 \right) - f\left( 4 \right)}}{{7 - 4}} = \frac{{34 - 73}}{3} = ...?\]

Answer 9

it is very simple, what is 34-73=...?

Answer 10

ok! now, what is -39/3=...?

Answer 11

perfect! That's your average rate