William raced up a flight of stairs at the rate of 3 stairs per second. The function below shows the total number of stairs f(t) that he is able to climb in t seconds:

f(t) = 3t + 4

Question

William raced up a flight of stairs at the rate of 3 stairs per second. The function below shows the total number of stairs f(t) that he is able to climb in t seconds:

f(t) = 3t + 4

anonymous · Answer

Which statement best describes the y-intercept of the graph of the function?

 It is equal to 7 and represents the number of stairs William can climb in 1 second.

 It is equal to 3 and represents the number of stairs William can climb in 1 second.

 It is equal to 4 and represents the number of stairs William had already climbed before he started racing up.

 It is equal to 3 and represents the number of stairs 

@popcornfun

anonymous · Answer

do u know where the y intercept is in the function

anonymous · Answer

you there?

anonymous · Answer

Sorry, I was getting food.

anonymous · Answer

its ok

anonymous · Answer

Haven't eaten all day... Anyways, where were we?

anonymous · Answer

i was asking if uu knew what the y interrupts were for this problem

anonymous · Answer

Y intercept is 4?

anonymous · Answer

i meant do u know what they mean?

anonymous · Answer

Well, 3t = no clue but the 4 = I have a feeling means the intercept.

anonymous · Answer

Oh 3t is a point on the line!

anonymous · Answer

So it starts at 3t and goes through 4.

anonymous · Answer

if u wanna find out the y u have to set the x values for 0 and solve for y

anonymous · Answer

One of the x values is 3.

anonymous · Answer

The Y intercept would be 4?

anonymous · Answer

yup

anonymous · Answer

So it's gotta be C?

anonymous · Answer

yup good job!

anonymous · Answer

Yeah, there's some more.. should I just put it in this topic?

anonymous · Answer

ok but when u post them can u wait for a min ill come back its just that someone wants my help for a question but ill come back as soon as i finish. can u wait?

anonymous · Answer

Yeah, for sure.

anonymous · Answer

thx ill be back as soon as i can

anonymous · Answer

The table below represents the distance a person runs as a function of time:

anonymous · Answer

Time (SECONDS) x:                             Distance(Meters) f(x)
10                                                                   60
13                                                                   78
16                                                                   96
19                                                                   114

anonymous · Answer

The average rate of change of the function between x = 10 to x = 16 is __________ m/s and represents the person's speed.

anonymous · Answer

hi srry my computer wasn't  working
and the answer is 6 because when u multiply the x's by six u get the f(x) answer
the x is like the input and the F(x) is another way for writing y and that is the output