Question

If f(x) = mx +c, f(4) = 11 and f(5) = 13, find the value of f(2).​

Answer 1

7

Explanation:

`f(4)=4m+c=11 \\ \\ f(5)=5m+c=13`

Subtracting the equations yields that m=2, and thus c=3.

`\implies f(2)=2(2)+3=7`