Douring a recent snowstorm, John measured the total snowfall accumulated at the end of each hour. He recorded his results in the
table below Time Snowfall Total 1 p.m. 2 p.m. 3 p.m 4 p.m. 5 p.m. 6 p.m. (in inches) 0.7 1.9 2.8 3 8 4.3 5.1 What is the approximate average rate of change of the snowfall between 1 p.m. and 6 p.m.? !PLEASE HELP!
1 answer:
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B
calculate the slopes m of the 2 lines using the gradient formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = C(- 2, 4) and (x₂, y₂ ) = D(0, - 4 )
=
=
= - 4
repeat with (x₁, y₁ ) = F(- 4, 0 ) and (x₂, y₂ ) = G(4, 2 )
=
=
=
The 2 lines are perpendicular because their slopes are negative reciprocals