Question

An environmental agency studying the effects of drought on a lake found that the water level decreased at a constant rate during the first few months of the drought. When the agency began its research, the depth of the lake was 346 feet. The table represents the agency’s susequent observations about the lake's depth.

what was the depth after 4 weeks?

Answer 1

Time
(weeks) Lake Depth
(feet)
0 346.0
2 344.8
5 343.0
7 341.8
10 340.0
12 338.8

Answer 2

@almighty_boi

Answer 3

@winxclubbloom15

Answer 4

these are the answer choice
343.0 feet

343.6 feet

344.4 feet

348.4 feet

Answer 5

Plot that function into y=mx+c form

Answer 6

x is time and y is lake depth

Answer 7

yes

Answer 8

okay

Answer 9

You know how to do it right?

Answer 10

no im not sure

Answer 11

i need help

Answer 12

ok, from the table, you can see the points of the line is (0,346.0) , (2,344.8) , (5,343.0) , (7,341.8) (10,340.0) , (12,338.8)

Answer 13

You can take any 2 points and find your gradient, m with this formula
\[m=\frac{ y _{2} - y _{1} }{ x _{2} - x _{1} }\]

Answer 14

okay thanks i got it now

Answer 15

Yes, after you got the equations right you sub in x=4 and you get the answer.

Answer 16

yes im srry @crissyyyxoxo123 iwas helpin other ppl