-1 is the correct answer
Hope it helps
Answer: 
Step-by-step explanation:
The equation of the line in Slope-Intercept form is:

Where "m" is the slope of the line and "b" is the y-intercept.
We know that the slope of this line is:

And the y-intercept is:

Since the line intersects the x-axis when
, we can substitute values into
:

The final step is to solve for "x", then:

Answer:
it is a polynomial and the degree is 6
Step-by-step explanation:
a polynomial is a function which involves positive integral powers
That is if the exponents are positive integers
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