body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Dashboard

BI

Big Ideas Math Integrated I, 2016 View details

3. Writing Equations of Parallel and Perpendicular Lines

Finish the assignment

Continue to next subchapter

Exercise 2 Page 181

Perpendicular lines have negative reciprocal slopes.

7/5, see solution.

Practice makes perfect

Two nonvertical lines are perpendicular if their slopes are negative reciprocals. Numbers are negative reciprocals if their product is -1. We need to find the slope that, when multiplied by - 57, will give us a product of -1.

-5/7* m=-1

MoveNegFracToNum

Put minus sign in numerator

-5/7* m=-1

MultEqn

LHS * 7=RHS* 7

-5m=-7

DivEqn

.LHS /(-5).=.RHS /(-5).

m=-7/-5

DivNegNeg

- a/- b=a/b