Any line with a slope of zero is parallel to the

x-axis

Step-by-step explanation:

a line in the cartesian plane is defined by the general equation:

where is the slope and is the y-intercept, so for a given value this return a value for .

When the slope of a line is equal to zero () we have:

 ( has always the same constant value)

which means that the value of for any given is the same, we have a constant function, that is represented in the plane as a horizontal line.

So when the slope is zero the line is a horizontal line, which is parallel to the x-axis since the x-axis is also a horizontal line.

answer: h=5.6 i don't really know how to put into words, so i though i would let you do that. i hope i was able to some

step-by-step explanation:

18 = 6(h)+1/2

18 = 6h+1/2

18-1 = 6h/2

17 = 3h

17/3 = h

h = 5.6