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Answer:
a) 10 y = x
b) 8.5 min
Step-by-step explanation:
a) x - axis = distance
y - axis = time
the line passing through points (10,1) (20,2) (30,3).......
line equation is y - y1 = m (x - x1)
m = (y2 -y1) / (x2 - x1)
= (2 - 1) / (20 - 10)
m = 1/10
y - 1 = 1/10 * (x - 10)
10(y - 1) = x - 10
10y - 10 = x - 10
10y = x
here x represents distance
y represents time
b) for distance of 85 inches
time =
10 * time = 85
time = 8.5 min