The y-intercept in slope-intercept form is b, which is represented by 12. The y-intercept is the initial value, and is found on the graph as the point (0, 12) where the line crosses the y-axis.
At time t = 1 hr... fee is initial ($12)+ ($8) = 20 <span>and so on... the intercept would be initial fee... which is $12 charged at t=0 hr </span> 8$ per hour is the essentially the slope <span>12 is the initial charge also known as the y-intercept </span>
<span>y = 8x + 12 </span>
where y is the total charge and x is the number of hours hope it helps
