Chapter 5 - Linear Functions - 5-6 Parallel and Perpendicular Lines - Practice and Problem-Solving Exercises - Page 331: 26

$y = 2x + 4$

Main Street goes through (2,1) and (3,3) $m = (1-3)/(2-3)$ $m = -2/-1$ $m = 2$ $y=mx+b$ $1 = 2*2+b$ $1 = 4 + b$ $1-4 = 4 +b - 4$ $-3 = b$ Main street: $y = 2x-3$ Park entrance at (0,4) $y = mx+b$ $4 = 2* 0 + b$ $4 = 0 + b $ $4 = b$ $y = 2x + 4$