If-f-be-a-linear-function-f-6-f-12-2-What-is-f-12-f-2-

Question Number 39650 by KMA last updated on 09/Jul/18

I f f b e a l i n e a r f u n c t i o n f (6) - f (12)

= 2 W h a t i s f (12) - f (2) .

Answered by MrW3 last updated on 09/Jul/18

a s s u m e f (x) = a x + b

f (6) - f (12) = 6 a + b - (12 a + b) = - 6 a = 2

\Rightarrow a = - \frac{1}{3}

f (12) - f (2) = 12 a + b - (2 a + b) = 10 a = - \frac{10}{3}

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