Question

Please help me

Answer 1

@DullJackel09

Answer 2

@Abmon98

Answer 3

@karim728

Answer 4

http://openstudy.com/users/shaleiah#/updates/57ad29f2e4b0b5aaebb0b8cc

All you need to do is identify the points, as I was trying to get you to do.

Answer 5

the first point is 0

Answer 6

Points are two values, and x and a y. Given as (x, y).

For example, one of the points is (2, 150).

Answer 7

Alright

Answer 8

First point- (0,0)

Answer 9

And the last point?

Answer 10

(8, 350)

Answer 11

Now find the slope between those two points.

Answer 12

By showing work, that is.

Answer 13

\[\frac{ f(b)-f(a) }{ b-a }=\frac{ 350-8 }{ 350-8 }=1\]

Answer 14

Your numbers are all plugged in wrong.

Points are
(0, 0)
(8, 350)

On the numerator, should be the y values. On the denominator should be the x values.

If you know how to find the slope of a line (the slope formula) you are doing the EXACT same thing here.

Answer 15

\[\large \frac{ y_2 - y_1 }{ x_2 - x_1 }\]

Answer 16

-175/4

Answer 17

Show work, because no.

Answer 18

\[\frac{ 350-0 }{ 0-8 }\]
=-175/4

Answer 19

Close but not quite.

(0, 0) is \((x_1, y_1)\)

(8, 350) is \((x_2, y_2)\)

Answer 20

\[\frac{ 350-0 }{ 8-0 }=43.75\]

Answer 21

Now repeat the same method for the rest.

First identify the points, then find the slope between them.

Answer 22

(2,150)
(4,240)

Answer 23

I think it's probably 225 not 240

Answer 24

are you sure?

Answer 25

It's in the middle between 200 and 250, so yes.

Answer 26

Now find the slope

Answer 27

Go to www.mathway.com It helps alot just put in the value :)))

Answer 28

can't... that's cheating.

Answer 29

\[\frac{ 225-150 }{ 2-4 }=-37.5\]

Answer 30

Why have you input 2-4 instead of 4-2?
Your formula is fine; the order in which you've entered your data is not.

Answer 31

You made the same mistake as earlier... gotta pay attention to your mistakes and learn from them.

Answer 32

Note the order of appearance of the variables in the 'average rate of change" formula:\[ave.r.of.change=\frac{ f(b)-f(a) }{ b-a }\]

Answer 33

b. 37.5

Answer 34

Good, keep going. You should be able to do them all now.

Answer 35

(4,225)
(5,300)

Answer 36

Yep

Answer 37

\[\frac{ 300-225 }{ 5-4 }=75\]

Answer 38

Yep

Answer 39

(5,300)
(6,300)

Answer 40

Yep

Answer 41

\[\frac{ 300-300 }{ 6-5 }=0\]

Answer 42

Yep

Answer 43

(8,350)
(6,300)

Answer 44

\[\frac{ 350-300 }{ 8-6 }=25\]

Answer 45

Yep

Answer 46

@mathmale what could I say for C ?

Answer 47

They were driving at diff. speeds

Answer 48

Alright, for D:
No, the rate of change isn't constant over the entire trip.

Answer 49

Yes