Question

i need MAJOR HELP!!
http://prntscr.com/9kcexj

Answer 1

PLZ HELP

Answer 2

question 3?

Answer 3

both plz

Answer 4

Not enough info on the 1st question on the screeenshot.

Answer 5

ooops im sorry

Answer 6

http://prntscr.com/9kchfy

Answer 7

here it is

Answer 8

plz explain

Answer 9

For #3;
\(\color{#000000 }{ \displaystyle 4.5\times2.20+3\times x=15 }\)

Answer 10

ok i understand that one

Answer 11

Why?

You know that each pound of apples is 2.20 dollars, and you bought 4.5 pounds. You also know that each pount of peaches is 3 dollars, but you don't know how many pounds of peaches you bought. And you know, lastly, that the entire cost is 15.

Answer 12

So, that is #3.... let's move on to the first problem.

Answer 13

ok

Answer 14

Your labels are:

x - correctly answered questions.
y - test score.

Answer 15

Can you give me the two points based on the given information in the question?

Answer 16

77 and 97?

Answer 17

Hint:

The points are in the form,

(Correctly answered Q's \(,\) Test Score) \(=\) (x \(,\) y)

Answer 18

Yes, good, one of the points is
(x,y) = (77, 97)

Answer 19

And what is the other point?

Answer 20

oh, no

Answer 21

I...dont know that part

Answer 22

77,97 is not a point; I made a mistake

Answer 23

You are given that when 13 questions are answered correctly, the score is 77.

So, the point in a form of:
(correct answer, test score)

you have,
(13,77)

Answer 24

ok

Answer 25

So, what is the other point in a form of

(correct answers, test score) ?

Answer 26

13 and 18?

Answer 27

no

Answer 28

When 18 questions are answered correctly, what was the test score?

Answer 29

97

Answer 30

yes, so your other point is?

Answer 31

in the form of (correct answers, test score) ...

Answer 32

(18,97)

Answer 33

Yes, so your two points are,

Answer 34

(13, 77)
(18, 97)

Answer 35

(13,77)

Answer 36

You need to find the equation of the line that goes through these two points;

(13, 77)
(18, 97)

Answer 37

What is the slope between these two points?

Answer 38

that part i dont know

Answer 39

how to find the slope

Answer 40

The slope formula is:

\(\color{black}{ \displaystyle {\rm m}=\frac{\color{blue}{b}-\color{red}{d}}{\color{green}{a}-\color{darkgoldenrod}{c}} }\)

where; \(\color{black}{ \displaystyle {\rm m} }\) is the slope
\(\color{black}{ \displaystyle (\color{green}{a}~,~~\color{blue}{b}) }\) and \(\color{black}{ \displaystyle (\color{darkgoldenrod}{c}~,~~\color{red}{d}) }\) are your two points.

Answer 41

In our case, your points \(\color{black}{ \displaystyle (\color{green}{18}~,~~\color{blue}{97}) }\) and \(\color{black}{ \displaystyle (\color{darkgoldenrod}{13}~,~~\color{red}{77}) }\).

Answer 42

ok imma do the math

Answer 43

ok i got 4

Answer 44

Yes, very good!

Answer 45

:)

Answer 46

is that my answer?

Answer 47

No...

Answer 48

ok what next

Answer 49

And another formula you need to know is,

Point slope formula,
\(\color{black}{ \displaystyle y-\color{blue}{b}=\color{red}{\rm m}(x-\color{green}{a})}\)

where; \(\color{red}{ \displaystyle {\rm m} }\) is the slope
\(\color{black}{ \displaystyle (\color{green}{a}~,~\color{blue}{b}) }\) is the point.

Answer 50

this will help you find the equation of the line.

Answer 51

Choose any of the two points;
(13, 77) or (18, 97)

which one do you prefer to use?

Answer 52

(13,77)

Answer 53

Yes, we can use that point.
(And we could have used the other point as well)...


so, let's re-write this with our numbers.

Answer 54

ok

Answer 55

\(\color{red}{ \displaystyle {\rm 4} }\) is the slope
\(\color{black}{ \displaystyle (\color{green}{13}~,~\color{blue}{77}) }\) is the point.

What would then be your equation?

Answer 56

im sorry how to find the equation?

Answer 57

its confusing

Answer 58

If you are given that: If you are given that:

\(\color{red}{ \displaystyle {\rm m} }\) is the slope \(\color{red}{ \displaystyle {\rm 4} }\) is the slope
\(\color{black}{ \displaystyle (\color{green}{a}~,~\color{blue}{b}) }\) is the point. \(\color{black}{ \displaystyle (\color{green}{13}~,~\color{blue}{77}) }\) is the point.

then, your equation is: then, your equation is??
\(\color{black}{ \displaystyle y-\color{blue}{b}=\color{red}{\rm m}(x-\color{green}{a})}\)

Answer 59

Compare the sides, and tell me your equation.

Answer 60

for the m slope is it 27-6=3(9-4)?

Answer 61

try again please

Answer 62

ok

Answer 63

I will repost it.

Answer 64

If you are given that: If you are given that:

\(\color{red}{ \displaystyle {\rm m} }\) is the slope \(\color{red}{ \displaystyle {\rm 4} }\) is the slope
\(\color{black}{ \displaystyle (\color{green}{a}~,~\color{blue}{b}) }\) is the point. \(\color{black}{ \displaystyle (\color{green}{13}~,~\color{blue}{77}) }\) is the point.

then, your equation is: then, your equation is??
\(\color{black}{ \displaystyle y-\color{blue}{b}=\color{red}{\rm m}(x-\color{green}{a})}\)

Answer 65

Oh I am sorry

Answer 66

sorry for what

Answer 67

You only needed to slope, so the answer is indeed 4

Answer 68

We don't need the equation of the line.

Answer 69

oh

Answer 70

yeah

Answer 71

thx man!:)

Answer 72

yw