Question

A ferry is travelling at a constant speed back to the dock, as shown in the graph. Which function represents the relationship between the distance from the ferry to the dock in miles, y, and the time that the ferry has been travelling toward the dock in hours, x? Ferry Traveling to Dock у y = 70x +105 y= -70% [phone] y= 35% +105 70 Distance to Dock (miles) 60 y=-35% [phone] 2 3 4 5 6 Time (hours) My Proares

Answer 1

Given data:

The given graph shown.

The first point on the graph is (0, 105) and the second point on the graph is (3, 0).

The expression for the equation of the line is,

$\begin{gathered} y-105=\frac{0-105}{3-0}(x-0) \\ y-105=-35x \\ y=-35x+105 \end{gathered}$

Thus, last option is correct.