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dlinn [17]
3 years ago
14

A bottlenose dolphin is 10 feet below sea level. Then it begins to dive at a rate of 9 feet per second. What is the equation of

the line that represents its elevation, y, after x seconds?
A.
y = 9x − 10
B.
y = -9x − 10
C.
y = 9x + 10
D.
y = -9x + 10
Mathematics
2 answers:
erastovalidia [21]3 years ago
7 0
B is the correct answer
jeka57 [31]3 years ago
3 0

Answer:

B. y=-9x-10

Step-by-step explanation:

The dolphin is starting 10 feet below sea level so the y-intercept (or b in slope-intercept form) would be negative 10. Diving means going down, or a negative slope, so the slope would be -9. When you plug those numbers into y=mx+b, you would get y=-9x-10.

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stiv31 [10]

Answer:

y = 2x-3

Step-by-step explanation:

We have 2 points so we can find the slope

m = (y2-y1)/(x2-x1)

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We can use the slope intercept form of the equation

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3 years ago
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Varvara68 [4.7K]

Hello!

Let's solve this equation for y first.

-10x+y=4

Add 10x to both side.

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8 0
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Please help with an explanation​
Vsevolod [243]

Answer:

the answer is incorrect though  the first step is correct but the second step is wrong and so is the answer. the correct answer would be x raise to the power of 2by 5

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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