Answer:
D = 
Step-by-step explanation:
Answer:
pretty sure its A
Step-by-step explanation:
A is the only one with the line going threw -1 and 5
The domain is all possible x values. For linear graphs, the domain is usually all real numbers.
9514 1404 393
Answer:
1.9 degrees per second
Step-by-step explanation:
The angle α the line makes with the water can be described by ...
Sin = Opposite/Hypotenuse
sin(α) = 10/(25 -1.9t)
Taking derivatives gives ...
α'·cos(α) = -10(-1.9)/(25 -1.9t)²
Then the rate of change of the angle at t=0 is ...
α' = 19/(25²·cos(α))
Of course, cos(α) = √(1 -sin(α)²) = √(1 -(10/25)²) = √(21/25), so we have ...
α' = 19/(125√21) . . . radians/second
α' ≈ 0.033269 radians/s ≈ 1.90 degrees/s
There is a formula to find the slope (m)
(y2 - y1) / (x2 - x1)
So we now have y = mx + b where m is the value you just calculated
The y intercept (b) = y - mx
Plug in the x,y values for one of your points into this formula
