When looking for a mathematical relationship between two variables, use a
a. line graph
b. circle graph
c. bar graph
d. data table

I believe the correct answer from the choices listed above is option A. When looking for a mathematical relationship between two variables, use a line graph. It relates how one variable affects the other by a linear relationship. Hope this helps. Have a nice day.

If you make you answer for clear i can answer it : )

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8