Assignment 10 quiz

course mth 163

Based on the graph, the water is decreasing at a slope of -3.27. the equation of the line is y = mx+b when solving for the variable b you obtain 187.02:First find slope:

(102 - 144.5) / (26-13) =

-42.5/13=

-3.27

Then find b:

102 = -3.27(26) + b

102 = -85.02 + b

187.02 = b

The next question asks at 48 sec what is the range:

y = -3.27(48)+ 187.02

y = -156.96 + 187.02

y = 30.06 cm

Then determine the time where the range is 32 cm:

32 = -3.27x + 187.02

-155.02 = -3.27x

x = 47.41"

Good work.