The difference between vertical and horizontal

The slop describes the steepness and direction of a line. To find the slop of a line, divide the vertical change by the horizontal change. An equation is m = vertical change / horizontal change. (rise / run) Moreover, We refer to the x-values as the domain and y-values as the range. A function is a special type of relation. If x-values(x1) goes to both y-values (y1 and y2), it is not a function.

The equation of a vertical line is x = number(#). It goes from top to bottom and bottom to top. If the line goes through the point (2,-3), the equation of a vertical line is x = 2. Also, we can call an undefined slope.

The equation of a horizontal line is y = number(#). It goes from left to right and right to left. If the line goes through the point (3, 2), the equation of a horizontal line is y = 2. Also, we can call a zero slope.