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Teachers & SchoolsACT Math: Coordinate Geometry Drill 4, Problem 1. Find the equation of the line described.

ACT Math | Coordinate Geometry |

ACT Mathematics | Coordinate Geometry |

Algebra | Coordinates and Graphs |

Coordinate Geometry | Parallel and perpendicular lines |

Foreign Language | Arabic Subtitled Chinese Subtitled Korean Subtitled Spanish Subtitled |

Geometry | Coordinate Geometry |

Language | English Language |

Product Type | ACT Math |

the land of Y equals MX plus B

were M is the slope of a line. The slope of a line

perpendicular to that line is the negative

inverse of that form. In this example the slope is negative 1/2

so we just need that negative reciprocal so that'll be positive

2 over one or just positive 2. So we can get rid of B and C as potential answers.

We also know that one point this perpendicular line contains is

8 , 2. So all we need to do is plug in these points

into Y equals MX plus B so

we get 2 equals 2 times

8 plus B and we have 2 equals 16 plus B

or B equals -14 and we have Y equals 2x -14

there you go. The answer is E.