Question

A Labrador leaps over a hurdle. The function f(t) represents the height of the Labrador above the ground, in inches, at t seconds:

f(t) = -16t2 + 20t

A foxhound jumps over the same hurdle. The table shows the height of the foxhound above the ground g(t), in inches, at t seconds:

Time (t) g(t)
0 0
0.4 7.44
0.6 9.24
0.75 9.76
1.0 9
1.50 0

Part A: Compare and interpret the maximum of f(t) and g(t)? (4 points)

Part B: Which function has a greater x-intercept? What do the x-intercepts of the graphs of f(t) and g(t) represent?

Answer 1

Part C: Determine the y-intercepts of both functions, and explain what this means in the context of the problem

Answer 2

@triciaal

Answer 3

@robtobey

Answer 4

help please

Answer 5

hey, you on flvs?

Answer 6

this is basic algebra one, you should have notes and an entire lesson on this. just plug in the numbers. :)

Answer 7

@JoannaBlackwelder

Answer 8

I always try to sketch the functions. easier to "see"

Answer 9

sketch the function f(x)
find when f(x) = 0 same as y = 0 the x intercepts
you have the information for g(x) plot the points to sketch this function as well

the maximum will occur at t/2 sec the maximum height is when slope =0 for g(t) the time is given 0.75 and h = 9.76
to compare the maximum height find F(0.75) and compare with 9.76

Answer 10

I might be doing all of part A and part B together but basically I would be looking at f(t) and g(t) comparing the maximum height difference in inches and also looking at when this is achieved; the time in secs

Answer 11

it would be ideal to have the graphs on the same grid.

Answer 12

the x-intercept is when y = 0 at the start and again when finished jumping 9back on the ground) these are the values of t when f(t) =0 and g(t) = 0

Answer 13

typo 9back should be (back

Answer 14

part C the y-intercept is when x = 0 for this question t = 0
compare f(0) and g(0)

Answer 15

hope you have everything
start with the graph then we can review
any questions right now?

Answer 16

wait so these were the anwsers @triciaal

Answer 17

yes