# GED Math 3.4 Graphs and Functions

GED Math: Graphs and Functions Drill 3, Problem 4. Which of the following statements must be true?

 GED Math Graphs and Functions Language English Language Mathematical Practice Abstracting Problems Parallel and Perpendicular Lines Equations and Slopes of Lines

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00:19

and s M stands for the slope of m and

00:22

s and stands for the slope of end in which

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of the following statements must be true and hear the

00:28

potential answers Seven his life Okay so what's this question

00:35

asking Well we're given a graph featuring a triangle that

00:38

looks badly in need of its morning cup of coffee

00:40

way And we need to figure out what would happen

00:44

if we multiplied the slopes of the three sides of

00:46

the triangle together They're no given numbers here Missed a

00:52

few letters So what gives Well let's look at the

00:55

other information that we are giving problems Says this is

00:58

a right triangle And yet there's a little right triangle

01:02

symbols So we know the two legs of the triangle

01:05

side in inside em are perpendicular ninety degrees member Okay

01:10

so what do we know about perpendicular lines Slope wise

01:14

Well hopefully remember that the slopes of the perpendicular lines

01:17

are always negative Reciprocal sze in other words multiply the

01:22

slopes of any two perpendicular lines and you get negative

01:26

one like if the slopes or three and negative a

01:30

third toe All three terms negative Third is negative one

01:33

and it'll be the same with any too negative reciprocal

01:36

ls he decide to plug in there lose us with

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just negative one time The last side side l were

01:42

looking over The answer choices It makes sense that sea

01:45

would work because negative onetime side l will always equal

01:49

negative side L so yeah we've got her answer and

01:52

our triangle friend has finally got his coffee All is 00:01:54.633 --> [endTime] right in the world