Question

math help pls

Answer 1

@Hero @Shadow

Answer 2

What's the question?

Answer 3

I might be able to help if I can see the question

Answer 4

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Answer 5

@Vocaloid

Answer 6

Well we have two points (0,-2) and (4,0) you can use the slope formula or just calculate rise/run visually from the graph

Answer 7

so (0-0) divided by 4 - -2?

Answer 8

Hm not quite

Slope formula is

(y2-y1)/(x2-x1) where x1, y1 is the first point and x2,y2 is the second point

So plugging them in we get

(-2-0) / (0-4)

Answer 9

1/2

Answer 10

so A

Answer 11

Yup

Answer 12

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Answer 13

In this case we have to estimate but it looks like it crosses (0,0) and (-1,-4) so same formula/reasoning as before

Answer 14

(0- -4) / (0- -1)

Answer 15

correct?

Answer 16

Oh wait I messed up one of the points >>

Answer 17

Should be (0,0) and (1,-4)

Answer 18

so (-4-0) / (0-1)

Answer 19

or (1-0)

Answer 20

If you use (0,0) as your x1y1 then

(-4-0)/(1-0)

Answer 21

so its -4

Answer 22

D

Answer 23

Yup

Answer 24

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Answer 25

thats one question just big answer choices lol

Answer 26

Basically it should be the lines slanting down from the top left to the bottom right (on mobile so can’t eeally draw this out rn)

Answer 27

so A and C?

Answer 28

Good

Answer 29

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Answer 30

Slope formula again (be careful with order/signs)

Answer 31

(5-1) / (-2-1)

Answer 32

So you have to be consistent when you pick your x1,y1, etc.

If you pick 5 to be your y2 and 1 to be your y1 then Your x2 should be 1 and your x1 should be -2

Answer 33

Making your denominator (1 - (-2)) not the other way around

Answer 34

Ohhh okay
which is 4/3

Answer 35

Yes

Answer 36

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so same for this
(-3-1) / (-4-0) I thinkk

Answer 37

or is it the other way around?

Answer 38

Hm other way around

If you choose (0,-3) to be your x1,y1 then the numerator is

1 -(-3)

And the denom is -4-0

Answer 39

ohh okay

Answer 40

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Answer 41

Well we have two clear points (0,0) and (8,6) what would be the slope?

Answer 42

well (0-8) / (0-6)

Answer 43

correct?

Answer 44

it's y coordinates over x coordinates

so (0-6) / (0-8)

Answer 45

3/4

Answer 46

so just B

Answer 47

almost

now we have to consider the real-life significance of this graph

if euros is on the x-axis and USD is on the y-axis then (8,6) would correspond to C or D?

Answer 48

like, since euros is on the x-axis, and 8 is the x-coordinate, then 8 euros = 6 dollars

Answer 49

C

Answer 50

correct?

Answer 51

yup so B+C are your sol'ns

Answer 52

Okey
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Answer 53

basically find final minus initial balance, then divide by the # of months

Answer 54

30

Answer 55

B

Answer 56

good

Answer 57

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Answer 58

similar logic as before, we identify two points on the graph (0,0) and (10,80) then find the slope

Answer 59

so (10-0) / ( 80-0)

Answer 60

y coordinates over x coordinates, remember

so (80-0) / (10-0)

Answer 61

8

Answer 62

Last one:
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Answer 63

notice any pattern? going down the list of temperatures they are increasing by the same amount each time

Answer 64

by 3

Answer 65

So A

Answer 66

good

Answer 67

Thank you Voca!