 # Question: What Is The Formula For A Perpendicular Line?

## How do you know if two lines are perpendicular?

Two lines are perpendicular if and only if the product of their slopes is .

In other words, the slope of a line that is perpendicular to a given line is the negative reciprocal of that slope.

Thus, for a line with a given slope of 3, the line perpendicular to that slope must be the negative reciprocal of 3, or ..

## How do you find a perpendicular number?

Explanation: Two lines are perpendicular if and only if their slopes are negative reciprocals. To find the slope, we must put the equation into slope-intercept form, , where equals the slope of the line. We begin by subtracting from each side, giving us .

## What type of angle do perpendicular lines form?

90 degreesPerpendicular lines are lines that intersect at a right (90 degrees) angle.

## Do perpendicular lines need to meet?

When two lines are perpendicular, the slope of one is the negative reciprocal of the other. … Note too that the lines to do not have to intersect to be perpendicular. In Fig 1, the two lines are perpendicular to each other even though they do not touch.

## How do you write an equation of a line?

The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.

## What is a perpendicular shape look like?

Perpendicular lines, in math, are two lines that intersect each other and the angle between them is 90°. The symbol used in between the two lines to say that they are perpendicular is ⊥ ⊥ . … Some shapes which have perpendicular sides are: Square.

## How do you determine if two lines are parallel?

We can determine from their equations whether two lines are parallel by comparing their slopes. If the slopes are the same and the y-intercepts are different, the lines are parallel. If the slopes are different, the lines are not parallel. Unlike parallel lines, perpendicular lines do intersect.

## How do you find the slope perpendicular?

Step 1: Find the slope of the line. To find the slope of the given line we need to get the line into slope-intercept form (y = mx + b), which means we need to solve for y: The slope of the line 8x + 6y = 15 is m = –4/3. Therefore, the slope of the line perpendicular to this line would have to be m = 3/4.

## How do you know if a slope is perpendicular?

To find the slope of the given line we need to get the line into slope-intercept form (y = mx + b), which means we need to solve for y: The slope of the line 8x + 6y = 15 is m = –4/3. Therefore, the slope of the line perpendicular to this line would have to be m = 3/4.

## What is the rule for perpendicular lines?

To be perpendicular, they only need to have opposite reciprocal slope. For example, the lines, y=3x+8 and y= -(1/3)x-3 would be perpendicular because -1/3 is the opposite reciprocal of 3.

## What is the slope of a line perpendicular to the line?

Explanation: Perpendicular lines have slopes that are the opposite of the reciprocal of each other. In this case, the slope of the first line is -2. The reciprocal of -2 is -1/2, so the opposite of the reciprocal is therefore 1/2.

## What is perpendicular lines example?

Perpendicular – Definition with Examples Two distinct lines intersecting each other at 90° or a right angle are called perpendicular lines. Here, AB is perpendicular to XY because AB and XY intersect each other at 90°. The two lines are parallel and do not intersect each other.

## What are 2 perpendicular lines?

If two non-vertical lines in the same plane intersect at a right angle then they are said to be perpendicular. Horizontal and vertical lines are perpendicular to each other i.e. the axes of the coordinate plane. The slopes of two perpendicular lines are negative reciprocals.