Question

HElP! Medal and fan!!

Answer 1

Do you know what each of the slopes are?

Answer 2

nope...

Answer 3

The slope of function A is just..well... "x". Or 1.
To get the slope of B just go rise over run.
Do you know how to go rise/run?

Answer 4

sorry im back i had to do something for my mom and yes i know how to do rise over run @imbehindascreen

Answer 5

Alright, I'm still here.

Answer 6

ok... well im not good with rise over run

Answer 7

The y-intercept of the graph is -1. Go Up and right until you find the next point on the graph. If you go up 2, then right one you will get to the next point. So that means the slope of Function B is 2/1.. or 2x. Do you have it from here?

Answer 8

oh ok yeah i do... thanks!

Answer 9

Sure and thanks for actually coming back to finish the problem. :D

Answer 10

lol yeah i wanted to make sure i understand the problem

Answer 11

can you help me with another graph problem?

Answer 12

Alright.

Answer 13

The graph below plots a function f(x).

Answer 14

If x represents time, the average rate of change of the function f(x) in the first two seconds is _______.

Answer 15

Okay, the way to calculate the rate of change is by using the formula: \[(f(b)-f(a))/(b-a)\]

f(b) - the second y value
f(a)- first y value
b-second x value
a-first x value

Answer 16

This is literally the same as the slope formula, just applied differently.

Answer 17

oh so this is kind of like u=mx+b... i just plug it in ... but im i little confused how to i find "f(b) and the others

Answer 18

*y

Answer 19

f(b) in this case would be the y value on the graph when x is 2.

Answer 20

Im still kind of confused

Answer 21

f(b) is y the value when x is 2. So f(b) is going to be 100. f(a) is the y value when x is 1. f(a) is 75. So now we have \[(100-75)/(b-a)\] B is going to be 2, and a is going to be 1.
So we have \[(100-75)/(1)\] average rate of change is 25.

Answer 22

Or around there.... I did my best so I hope you get this right...

Answer 23

The main problem was calculating what the y-value was at x=1.