Determine the point of intersection of the graphs of the functions $y(x)=7x-5$ and $z(x)=-3x+11$.
Antwoord 1 correct
Correct
Antwoord 2 optie
$(4,23)$
Antwoord 2 correct
Fout
Antwoord 3 optie
$(\frac{10}{16},-\frac{5}{8})$
Antwoord 3 correct
Fout
Antwoord 4 optie
The correct answer is not among the other options.
Antwoord 4 correct
Fout
Antwoord 1 optie
$(\frac{8}{5},6\frac{1}{5})$
Antwoord 1 feedback
Correct: $$\begin{align*}
7x-5=-3x+11& \Leftrightarrow 10x-5=11\\
& \Leftrightarrow 10x=16\\
& \Leftrightarrow x=\frac{16}{10}\\
& \Leftrightarrow x=\frac{8}{5}
\end{align*}$$
$y(\frac{8}{5})=6\frac{1}{5}$.
Go on.
7x-5=-3x+11& \Leftrightarrow 10x-5=11\\
& \Leftrightarrow 10x=16\\
& \Leftrightarrow x=\frac{16}{10}\\
& \Leftrightarrow x=\frac{8}{5}
\end{align*}$$
$y(\frac{8}{5})=6\frac{1}{5}$.
Go on.
Antwoord 2 feedback
Wrong: Consider the minus-signs.
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Antwoord 3 feedback
Wrong: Pay attention when dividing.
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Antwoord 4 feedback
Wrong: The correct answer is among them.
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