# Chapter 9 - Quadratic Functions and Equations - Cumulative Test Prep - Short Response - Page 596: 27

$y=-1/4x+1$

#### Work Step by Step

Line p: $y=4x-3$ Line n: to be determined (perpendicular to $p$ and goes through $(8,-1)$). Perpendicular lines have lines whose product is $-1$. $4*m=-1$ $m=-1/4$ $y=mx+b$ $-1=-1/4*8+b$ $-1 = -2+b$ $1=b$ $y=-1/4x+1$

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