Q:
# What Is the Slope of a Line That Is Perpendicular to the X Axis?

**A line that is perpendicular to the x-axis has an undefined slope.** All of the points on such a line have the same x-coordinate. If the value of x never changes, then the formula for slope, (y2 - y1)/(x2 - x1), has a denominator of zero, which is mathematically undefined.

Dividing by zero does not yield a numerical answer. Because the inverse operation of division is multiplication, any division problem can be undone by a corresponding multiplication problem. For example, since six divided by two equals three, then three times two must equal six. However, if six divided by zero had a numerical answer, then the product of that number and zero would have to equal six, and multiplying any number by zero always yields zero.

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Q:
## What Is the Slope Intercept Form?

A: The slope intercept form for a line is expressed as y = mx + b. In that equation, y is the value of the y-coordinate, x is the value of the x-coordinate, m... Full Answer >Filed Under: -
Q:
## How Do You Find the Point-Slope Form of an Equation?

A: To find the equation of a line given the slope and a single point, you need to use the point-slope form of y - y1 = m(x - x1). It is almost identical to th... Full Answer >Filed Under: -
Q:
## How Do You Solve an Equation Using Slope-Intercept Form?

A: The slope-intercept form of the equation of a line is y = mx + b, where m is the slope of the line and b is the y intercept. To solve for y, multiply the x... Full Answer >Filed Under: -
Q:
## What Is the Formula for Calculating the Slope of a Line?

A: The formula for calculating the slope of a line when given two points, (x1, y1) and (x2, y2), is the difference in y coordinates divided by the difference ... Full Answer >Filed Under: