Question

An airplane ascends at the rate of 40 feet per minute. The function below shows the height of the airplane from the ground f(t) after t minutes:
f(t) = 40t + 520

Which statement best describes the y-intercept of the graph of the function? (3 points)

Answer 1

It is equal to 520 and represents the height of the airplane above the ground, in feet, after 1 minute.
It is equal to 560 and represents the height of the airplane above the ground, in feet, after 1 minute.
It is equal to 40 and represents the height of the airplane above the ground, in feet, before it starts ascending.
It is equal to 520 and represents the height of the airplane above the ground, in feet, before it starts ascending.

Answer 2

It is the last one

The \(y-intercept\) is always the value that doesn't have an \(x\) or \(y\) beside it. In this case, that number

Answer 3

...is 520

Answer 4

That is because it is the number that is not next to \(x\) or \(y\)

Answer 5

It was correct. thank you!

Answer 6

No problem @tqosborne :D. If you think I helped, please consider pressing the Best Response button. Thank you :)

Answer 7

If an equation is in the structure of \(y=x+b\), where \(y\) is on one side, and \(x\) and the rest is on the other side, then \(b\) is the \(y-intercept\)
\[y=x+\boxed{b}\]