The pictures show parts of graphs of functions that are increasing on the interval \([1;5]\). Choose the picture showing the part of the graph of the function \(f(x)=\frac{5x-1}{x+1}\).
Determine the set of all values of the parameter \( a \in \mathbb{R} \setminus \{-2;2\}\) for which the equation has an infinite number of solutions.
\[
\frac{x-a}{2-a} = \frac{x+a}{2+a}
\]
Consider the following equation with a parameter \( a\).
\[
5x-a=ax+4
\]
Choose the table that summarizes solutions of the equation according to the value of \(a\).
Determine the set of all values of the parameter \( a \in \mathbb{R} \setminus \{3\} \) for which the given equation has no solution.
\[
\frac{5x-2}{a-3} = 4+ \frac{2x}3
\]
The test driver drove from Ostrava to Warsaw at an average speed of \(66\, \mathrm{km}/\mathrm{h}\) and the journey took him \(6\) hours. After him, the same route took several other drivers. (Each driver took a different driving time.) Choose the function giving the average speed \(v\) of each of these drivers as a function of the total driving time \(t\) from Ostrava to Warsaw.