Beth is using a map. Let x represent a distance in centimeters on the map. To find an actual distance y in kilometers, Beth uses the equation y = 4x. Beth is using a map. Let x represent a distance in centimeters on the map. To find an actual distance y in kilometers, Beth uses the equation y = 4x.

The following table compares a distance on the map to the actual distance.

Map distance (cm) 1 2 3 4 5
Actual distance (km) 4 8 12 16 20