Question

which of the following equations has a slope of zero a) x=0 b) Y=-4 c) y=x

Answer 1

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HOY -- horizontal line, 0 slope, represented by y = a number
VUX -- vertical line, undefined slope, represented by x = a number

as u can see, a horizontal line will have a 0 slope...and it is represented by y = a number....therefore, ur answer is : y = -4 <==