no, eg.
409 x 2 = 818
19 x 0 + 23 = 23
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A horizontal line has a slope of zero. The equation of a horizontal line is y = a.
That its roots (solutions) are coincident.
If the discriminant of the quadratic equation is zero then it will have 2 equal roots. If the discriminant of the quadratic equation is greater than zero then it will have 2 different roots. If the discriminant of the quadratic equation is less than zero then it will have no roots.
One way is if the denominator becomes zero.
one