# Find the Slope of the Perpendicular Line to the Line Through the Two Points (-12,3) , (11,-6)

Find the Slope of the Perpendicular Line to the Line Through the Two Points (-12,3) , (11,-6)
,
Slope is equal to the change in over the change in , or rise over run.
The change in is equal to the difference in x-coordinates (also called run), and the change in is equal to the difference in y-coordinates (also called rise).
Substitute in the values of and into the equation to find the slope.
Simplify.
Simplify the numerator.
Multiply by .
Subtract from .
Simplify the denominator.
Multiply by .
Move the negative in front of the fraction.
The slope of a perpendicular line is the negative reciprocal of the slope of the line that passes through the two given points.
Simplify .
Cancel the common factor of and .
Rewrite as .
Move the negative in front of the fraction.
Multiply the numerator by the reciprocal of the denominator.
Multiply by .
Multiply .
Multiply by .
Multiply by .
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### Name

Name three hundred ninety-six million two hundred fifty-six thousand three hundred forty-eight

### Interesting facts

• 396256348 has 32 divisors, whose sum is 923348160
• The reverse of 396256348 is 843652693
• Previous prime number is 2351

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 46
• Digital Root 1

### Name

Name one billion five hundred eight million six hundred forty-five thousand eight hundred sixty-nine

### Interesting facts

• 1508645869 has 4 divisors, whose sum is 1509632800
• The reverse of 1508645869 is 9685468051
• Previous prime number is 1531

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 52
• Digital Root 7

### Name

Name one billion seven hundred twenty-one million one hundred seventy thousand four hundred thirty-one

### Interesting facts

• 1721170431 has 16 divisors, whose sum is 2660747520
• The reverse of 1721170431 is 1340711271
• Previous prime number is 3

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 27
• Digital Root 9