Function

For linear function f(x) = ax + ​​b ‬ is f(14)=179; f(15)=154. Calculate m, if f(m) = 2019 .

Correct answer:

m =  -59.6

Step-by-step explanation:

$$\begin{gathered} f(x)=ax+b \\ a={\displaystyle \frac{154-179}{15-14}}=-25 \\ b=179--25\cdot 14=529 \\ m={\displaystyle \frac{2019-b}{a}}=-59.6 \end{gathered}$$

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