The greatest record-breaking spree in Olympic swimming competition occurred when world records were set in 22 out of 26 events. In one of these events, an East German, Petra Thumer, set a world record in the 400-meter freestyle, winning in 4:09.89 (4 minutes 9.89 seconds). Part 1 out of 2 a. A world record in the 200-meter freestyle was set by another East German, Kornelia Ender, whose time was 1:59.26. If this rate of speed could be maintained, how long would it take to swim the 400- meter event? minutes seconds

Equations and inequalities describe the relationship between two mathematical expressions.

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.