Well the remainder more possible dividing by six would be 9.3 I hope i helped.
Slope =

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6 - 6 = 0
15 - (-1) = 16
0 / 16 = 0
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You have a
slope of 0, meaning that this is a straight horizontal line
The slope of these coordinates is - 3/5
X= - 1/2 , To find x- intercept zero , substitute f (x) = 0 , then just solve the equation for X , Hope this helped