Lena drove 871 miles in 13 hours.

At the same rate, how long would it take her to drive 536 miles?

_Hours

x = 11

Step-by-step explanation:

Cross Multiply which gives you the following taking numerator from left and denominator from right for one side of equation, and denominator from left and numerator from the right for other side.

Therefore:

871(x) = 13(737)  

871x = 9581

Now divide both sides of your equation by 871 to leave x by itself, okay?

x = 11

8 hours to drive 536 miles

Step-by-step explanation:

8 times 67 equal 536 and 67 times 13 equal 871

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value