1-8 is simple. Just subtract 8 from 1. so 1-8 = -7
The best and most correct answer among the choices provided by your question is the fourth choice.
<span>The rays extend infinitely and the angle is made by the rays which have a common endpoint.</span>
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The given equation is:

We need to find which set of parametric equations, result in the equation given above. The correct answer is option A.

From first equation, we can write t =x/5. Using this value in second equation, we get:

Thus the set of equations in option A result in the given relation.
So, the answer to this question is option A