# TSI Math: Recognizing the Equation for a Bisector of a Graphed Line

Which of the following lines is perpendicular to the line graphed above?

Geometry and Measurement | Plane Geometry |

Mathematics and Statistics Assessment | Plane Geometry |

Product Type | TSI |

TSI | Mathematics and Statistics Assessment TSI Math TSI Mathematics |

TSI Math | Geometry and Measurement |

TSI Mathematics | Geometry and Measurement |

Test Prep | TSI |

### Transcript

lining down there So the slope of the one perpendicular

has to be the opposite And reciprocal Well perpendicular as

we said is a matter of slope We don't need

to graph the answer choices here Instead we just compare

the slopes visually like we're doing here It takes two

slopes to make a comparison and we need a single

slope before we can have two So find slope of

the given line starting at thehe y intercept zero Negative

three right there The line moves Five units the right

one unit down to reach five Negative four five right

and one down is equivalent to will rise Overrun that's

negative one over five or negative one fifth So that's

a slope of this line Since we're dealing with purpose

particular lines were looking for slopes that are negative Reciprocal

sze will the negative reciprocal of negative one fifty five

So we have to zoom in on an answer choice

with a slope of five Luckily the answers are all

written and slope intercept form y equals mx plus b

so that should be easy The coefficient of the ex

term am There is the slope in this form and

the only answer with an ex coefficient of five And

therefore a slope of five is y equals five x 00:01:22.212 --> [endTime] plus sixteen So well it is That's it