Question

Algebra 2 help please :)

Answer 1

Question?

Answer 2

Sure

Answer 3

What do you need for Algebra 2?

Answer 4

What is the slope intercept form equation of the line that passes through (2,4) and (4,10)
A. y=-3x-2
B. y=-3x+2
C. y=3x+2
D. y=3x-2

Answer 5

First find the slope using the points they gave you. Do you know how to do that?

Answer 6

y=mx+b? right

Answer 7

No, that's the slope-intercept form of an equation.

Answer 8

Slope formula is this:

Answer 9

\[m=\frac{ y _{2} -y _{1}}{ x _{2}-x _{1} }\]

Answer 10

no no the slope would be m=3? right?

Answer 11

Using your points fill the formula in like this:

Answer 12

sorry I got confused

Answer 13

NP : )

Answer 14

\[m=\frac{ 10-4 }{ 4-2 }=\frac{ 6 }{ 2 }=3\]

Answer 15

So the slope would be m=3

Answer 16

You were right...the slope is 3. Now use one of your points to write the equation. Use the point-slope formula. Do you know it?

Answer 17

y=y1=m(x-x1) ?

Answer 18

y-y1=m(x-x1)**

Answer 19

Yes that's it. Now pick a point and fill in your y1 and x1, using the slope of 3 that you found. Can you do that?

Answer 20

y-4=3(x-2) ??? @IMStuck

Answer 21

So sorry, was doing calculus and acceleration!

Answer 22

its okay! :)

Answer 23

Yes that is the right equation using the point (2,4) and the slope of 3. Good!

Answer 24

Now you just have to rewrite it using the slope-intercept form of the equation. Solve it for y. Can you do that?

Answer 25

y=3x+2 ?

Answer 26

Close...it's y = 3x-2. When you distribute the 3 into the parenthesis, you get 3x-6, so when you add the 4, you have a -2, not a +2.

Answer 27

Do you see your error?

Answer 28

Yes I see where I went wrong. I didnt put the negative on the 2

Answer 29

Could you help me with a few more sorry if im bothering you

Answer 30

Hey can help

Answer 31

I mean can try

Answer 32

Thank you :)

Answer 33

Ok

Answer 34

No problem

Answer 35

Warning I am NOT GOOD AT MATH

Answer 36

given the function f(x)=6(x+2)-3 solve for the inverse function when x=21
A.-45
B.0
C.2
D.63

Answer 37

Lol its okay. Im not either

Answer 38

what do not know just a sec ill look it up on a calculator :)

Answer 39

Is that okay?

Answer 40

Yes thats fine :)

Answer 41

Here ill give you the links of the ones I'm going to use.

http://www.wolframalpha.com/ and https://www.mathway.com/

Answer 42

Thank you:)

Answer 43

Your welcome click on this-> http://www.wolframalpha.com/input/?i=f%28x%29%3D6%28x%2B2%29-3

Answer 44

And see if this is your answer

Answer 45

No i didnt see the answer on there but its okay

Answer 46

This should be the answer okay? (click on link.)

https://www.mathway.com/ and type in the problem here is what I see

f-1(x)=1/6x- 3/2 this sign / like with the 1/6 and the 3/2 these are fractions
but type it in to make sure okay? :)