Pedro and ivan races each other in a 24-mile bike race. after 20min, pedro had traveled 5 miles. ivan had spent the 20 minutes traveling at a rate of 16mph. which person was in 1st place after 20min?

If the representation is a graph then use the vertical line test. draw or imagine straight vertical lines going down the graph. if the vertical line only goes through the function line one time then it is a function. for an example, a circle on a coordinate plane is not a function but a wavy line is. if the representation is a table with points then look at the x values. if x repeats then it is not a function.