Find the slope-intercept equation of the line tagt passes through(-4,0) and has a slope of -2/3

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.

92ft long and 48 wide resurface 2.75$

What is the length of ac in the given triangle?