Question

Can anyone help with this?

Answer 1

your missing some given in question a

Answer 2

No that is exactly what i was given.

Answer 3

nope

Answer 4

Well i just looked and i didn't miss anything.

Answer 5

take a screen shot of the whole thing

Answer 6

see how you missed the given?

Answer 7

No i didn't miss anything. it's all there in the first one.

Answer 8

nvm it just loaded properly on my end now LUL

Answer 9

the top part wouldn't load

Answer 10

what top part? it was all there the first time.

Answer 11

@kirbykirby can u help with this?

Answer 12

ok for the first one, you can just substitute x = 8 in the linear formula

Answer 13

you should get 2.47

Answer 14

ok that makes sense.

Answer 15

good :)
For the 2nd one... remember that a slope tells you how a unit change of x changes y

In this problem, the slope tells you how one hour of videos games will change the the grade point average by 0.0572 points... now the sign of the slope tells if it's a decrease or an increase. Since the slope is negative here, it would correspond to a decrease

Answer 16

so for b i put decrease and 0.0572?

Answer 17

yes!

Answer 18

that simple

Answer 19

ok

Answer 20

for c)... the intercept will tell you the grade-point average when x=0, then is when there are no hours of video games played (think if you put x=0, the slope term disappears and y = 2.9251)

Answer 21

ok so i put x=0 in the problem and solve?

Answer 22

yes basically. Although the answer choices gives you a more physical interpretation of that result. Can you do that?

Answer 23

ok i'll shall try that

Answer 24

i got 2.9102

Answer 25

yes. ignore my 2.9251 i was looking at some different window :P

Answer 26

So for c) would it be A or B?

Answer 27

omg you know what im so sorry i was looking at a different window and i write down the wrong linear formula for your question... your line here is y= -0.0551x + 2.9102

Answer 28

yah

Answer 29

so for b): change the number to 0.0551

Answer 30

ok

Answer 31

which should make more sense :P

Answer 32

for c) it's A)

Answer 33

the intercept is always the value of the line when x = 0, so this is sufficient

Answer 34

d) it's similar in style to A... you have to plug in 7 into your equation and you compare that value to 2.41

Answer 35

ok

Answer 36

i got 2.5245

Answer 37

it's higher

Answer 38

oh wait the question they asked is reversed. so 2.41 is below average (2.52)

Answer 39

so i put below?

Answer 40

yes

Answer 41

THX!! ^_^

Answer 42

no problem =)