a. Every minute (approximately 18) meters are traveled.
b. The equation to show the relationship between x and y can be expressed as y = 18x + b, where b is the y-intercept calculated from the data.
c. This relationship is linear because the y-intercept is 76 (when x = 4, y = 76 can be used to solve for b).
Note: The specific value for the meters traveled per minute may need to be calculated accurately from the provided data if required.