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7 votes
I don’t understand this question

I don’t understand this question-example-1
User Vbyec
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2 Answers

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15 votes
The answer is: this is a one to one function
User Sajad NasiriNezhad
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9 votes
9 votes

Answer:

This is a one to one function

Explanation:

From the function, we know that f(x) = x - 7 is a linear graph.

Using horizontal line test

the graph is one to one if the horizontal line only cross the graph at one point

User Thierry Maasdam
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