Geometry Fundamentals: Equations of Lines

Geometry Level 1

Which graph shows the line y = 3 x − 1 ? 3x - 1\,?

A B C

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3 solutions

Brilliant Mathematics Staff
Aug 1, 2020

The line y = 3 x − 1 y=3x-1 has a slope of 3 and a y y -intercept of -1. Therefore, it matches Graph A.

Notice that both Graph B and Graph C have negative slopes.

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Yajat Shamji
Aug 1, 2020

Since graphs B , C B, C have negative slopes, Graph A \fbox A is the answer.

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Mahdi Raza
Aug 4, 2020
  • The line has y y -intercept is ( − 1 ) (-1) .
  • Only line C has that as ( − 1 ) (-1) , hence C is the answer
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