How can you mathematically prove that two lines are perpendicular?

Determine the slopes (m) of the lines by putting the equations in the form

y = mx + b.

If the product of the two slopes is -1, the lines are perpendicular.

To mathematically prove that two lines are perpendicular, you can follow these steps:

Step 1: Write down the equations of the two lines. For example, let's say we have line A: y = m1x + c1, and line B: y = m2x + c2.

Step 2: Calculate the slopes (m1 and m2) of both lines. The slope of a line is the ratio of the change in y-coordinates to the change in x-coordinates.

Step 3: Check if the product of the slopes (m1 * m2) equals -1. If the product is -1, it indicates that the lines are perpendicular.

Step 4: Also, make sure that the lines are not parallel. If the slopes are equal (m1 = m2), but the lines do not coincide, then the lines are perpendicular.

By following these steps and checking the conditions, you can mathematically prove that two lines are perpendicular.

To mathematically prove that two lines are perpendicular, you can make use of the concept of slopes. If the slopes of two lines are negative reciprocals of each other, then the lines are perpendicular. Here is the step-by-step process for mathematical proof:

Step 1: Start by finding the slopes of the two lines, let's call them line 1 and line 2. The slope of a line is usually represented by the letter 'm'.

Step 2: Calculate the slope of line 1. If you have the equation of line 1 in the form of y = mx + b, then the coefficient of 'x' represents the slope. If it is in a different form, you may need to rearrange the equation to isolate 'y' and 'x' in order to find the slope.

Step 3: Calculate the slope of line 2 using the same method as Step 2.

Step 4: Once you have the slopes of both lines, check if they are negative reciprocals of each other. A negative reciprocal means that if you multiply the two slopes together, the product will be -1.

Step 5: Multiply the two slopes together and check if the product is -1. If it is, then the lines are perpendicular. If not, then the lines are not perpendicular.

By following these steps, you can mathematically prove whether or not two lines are perpendicular.