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  2. For business economics
  3. Chapter 1: Functions of one variable
  4. Power functions and polynomial functions
  5. Linear functions
  6. Exercise 1

Exercise 1

Determine the zero of $y(x)=7x-5$.
$x=\frac{5}{7}$
$x=\frac{7}{5}$
$x=-\frac{5}{7}$
$x=-\frac{7}{5}$
Determine the zero of $y(x)=7x-5$.
Antwoord 1 correct
Correct
Antwoord 2 optie
$x=\frac{7}{5}$
Antwoord 2 correct
Fout
Antwoord 3 optie
$x=-\frac{5}{7}$
Antwoord 3 correct
Fout
Antwoord 4 optie
$x=-\frac{7}{5}$
Antwoord 4 correct
Fout
Antwoord 1 optie
$x=\frac{5}{7}$
Antwoord 1 feedback
Correct: $$\begin{align*}
7x-5=0 & \Leftrightarrow 7x=5\\
& \Leftrightarrow x=\frac{5}{7}.
\end{align*}$$

Go on.
Antwoord 2 feedback
Wrong: What is the solution to $7x=5$?

Try again.
Antwoord 3 feedback
Wrong: Note the minus-signs.

Try again.
Antwoord 4 feedback
Wrong: Consider the minus-signs.

Try again.