The table shows data gathered by an environmental agency about the decreasing depth of a lake during the first few months of a d
rought. Time (weeks) Lake Depth (feet)
0 346.0
2 344.8
5 343.0
7 341.8
10 340.0
12 338.8
The lake's depth after four weeks will be__
feet, and its depth after nine weeks will be__
feet.
y = mx + b slope(m) = -0.6 (0,346)...x = 0 and y = 346 now we sub and find b, the y int 346 = -0.6(0) + b 346 = b so ur equation is : y = -0.6x + 346....with x being the number of weeks
after 4 weeks... y = -0.6(4) + 346 y = - 2.4 + 346 y = 343.6 <==== after 4 weeks
after 9 weeks.. y = -0.6(9) + 346 y = -5.4 + 346 y = 340.6 <=== after 9 weeks
