Bob has to run some errands around town. look at the map below to calculate his distance if he starts at home, goes to the video store, then the grocery store, grabs a fast snack, and ends at home. how many units did he walk?

15 units
18 units
20 units
36 units

Sticking to straight lines, he walks 18 units to complete that itinerary.

Where m is the slope of the line and b is the y-intercept of the line, or the y-coordinate of the point at which the line crosses the y-axis. to write an equation in slope-intercept form, given a graph of that equation, pick two points on the line and use them to find the slope. this is the value of m in the equation.

This is the graph x=1