Find a so that the point (-1, 2) is on the graph of f(x)=ax^2+5.

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16-08-2016
Mathematics

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Find a so that the point (-1, 2) is on the graph of f(x)=ax^2+5.

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meerkat18 meerkat18 · Answer 1 · 2016-08-19T17:44:41+02:00

meerkat18 meerkat18

19-08-2016

we are asked to determine the value of a such that the function f(x) = ax^2 + 5 is fit for the point given (-1,2). In this case, we substitute 2 to y and -1 to x. The result is then 2 = a*(-1)^2 + 5 ; 2 = a + 5; a is then equal to -3

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