a. The sketch of the graph is attached
b. The graph passes through the origin
How to find the equation
a. To find the equation, we examine the statement stated in the problem
It takes her 5 minutes to travel one city block
- y = number of city blocks
- constant of proportionality = 5
So, we have the equation
y = kx
y = 5x
b. The features of the graph that help determine if the relationship is proportional are:
- The equation shows zero y intercept
- The graph passed through the origin