Complete this sentence with the correct choice: y = 4 is a horizontal line with ________.

a.undefined slope.

b.a slope of 4.

c.a slope of 0.

d.None of the above will make a true statement.

If slope = y/x and it is a horizontal line (parallel to the x axis), then y = ?
What do you think?

the question is x=? not y. y is given (4)

To determine the correct choice, let's consider the characteristics of a horizontal line. A horizontal line is parallel to the x-axis and does not have any vertical change.

The equation of a line can be expressed using the slope-intercept form, which is y = mx + b, where m represents the slope of the line and b represents the y-intercept.

For a horizontal line, the slope is always 0 because there is no vertical change. So, the correct choice to complete the sentence is option c) a slope of 0.

Based on the provided information, the equation y = 4 represents a horizontal line with a slope of 0.