Thanks for reaching us. Could you please point what was wrong in b in order to help you further?
@mrlogicodermrlogicoder6884 жыл бұрын
Vertical line test can only be used in testing if it is a function,but not a one to one function,instead horizontal line test should be used. The reason why the answer is still correct,just because the function applies in both horizontal and vertical test in this question, if you use other example like quadratic equation that open upwards or downwards, in your vertical line test, you will say it is a one to one function as there is only 1 intersection pt, but in fact it is only a function,but not an one to one