Question 214794
Time starts at t = 0 min.
time 0 10 min. 20 min 30 min.
x 10 15 28 40
y 50 59 82.4 104
a. Create a graph locating these data points on an (x,y) coordinate plane.
b. Find the slope of this graph
c. Create the linear equation based on the data info collected. 

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Use two of the x/y relations to find the slope:
slope = (50-10)/(59-15) = 40/44 = 10/11
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Form of the line is y = mx + b
Find "b":
50 = (10/11)*10 + b
50 = 100/11 + b
550/11 = 100/11 + b
b = 450/11
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Equation:
y = (10/11)x + 450/11
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{{{graph(400,300,-100,100,-10,10,(10/11)x + (450/11))}}}
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Cheers,
Stan H.