Is the line for the equation x = 4 horizontal or vertical? what is the slope of the line? select the best answer.

the line is horizontal. the slope is 0.
the line is vertical. the slope is undefined.
the line is horizontal. the slope is undefined.
the line is vertical. the slope is 0

we know that

The slope of the lines parallel to the y-axis or vertical lines is undefined and the slope of the lines parallel to the x-axis or horizontal lines  is equal to zero

In this problem we have

This is the equation of a vertical line parallel to the y-axis

the slope is undefined

therefore

the answer is the option

The line is vertical. The slope is undefined

connie < felicia < stew

step-by-step explanation:

stew:

we need to find the slope

m = (y2-y1)/ (x2-x1)

    = (2650-795)/(10-3)

    = 1855/7

265 words per minute

connie:

we need to find the slope

m = (y2-y1)/ (x2-x1)

we have two points (0,0) and (4,800)

m = (800-0)/(4-0)

  m = 800/4

    200 words per minute

felicia:

260 words per minute

200< 260 < 265

connie < felicia < stew