Question

sWhat is the equation in point-slope form of the line passing through (2, 2) and (4, 8)?

(y - 2) = 3(x - 2)

(y + 2) = 3(x + 2)

(y - 8) = -3(x - 4)

(y + 8) = -3(x + 4)

Answer 1

Slope = m = (y2 - y1)/(x2 - x1)

Answer 2

So it would be B?

Answer 3

Yup :)

Answer 4

Could you help me out with some more?

Answer 5

Sure, I'll see what I can do.

Answer 6

Factor 3x2 - 6x - 9 completely.

3(x - 1)(x + 3)

3(x + 1)(x - 3)

(3x + 1)(x - 3)

(3x +1)(x - 3)

Answer 7

I would factor out a 3 first since all the terms are multiples of 3.

Answer 8

Hmmm I had an idea the answer was C

Answer 9

Multiply it out and see if it works.

Answer 10

Only thing confusing me is the 6

Answer 11

Factoring out c, I get 3x^2 - 8x - 3

Answer 12

Did you try factoring out a 3 out of the quuadratic?

Answer 13

Yeah im just completely comfused on this one

Answer 14

Factoring out a 3 I get 3(x^2 - 2x - 3)

Answer 15

Now that I look at it, I believe its as well B

Answer 16

Yup, that's what I get.

Answer 17

What is the 3rd term when -2h4 + 5h2 - 3 - 2h - 8h3 is arranged in descending order?

h

-8h3

6f4

5h2

Answer 18

-8h3, right?

Answer 19

Descending order means the exponents go from largest to smallest. I don't get what you got.

Answer 20

ooo ok so it would be 6f4? Those are the 4 choices that I have to choose from

Answer 21

I don't see 6f4 as a term at all...?

Answer 22

Yeah the choices are h, -8h3, 6f4 and 5h2

Answer 23

How could 6f4 be the answer when it isn't a term in the problem statement?

Answer 24

Here is the question

Answer 25

What is the 3rd term when -2h4 + 5h2 - 3 - 2h - 8h3 is arranged in descending order?

A) h

B) -8h3

C) 6f4

D) 5h2

Answer 26

I see what you mean about the 6f4 sorry didn't notice that

Answer 27

Right, so these are the terms we are to order and find the third term:
-2h4 + 5h2 - 3 - 2h - 8h3

Answer 28

No worries. So, can you put them in descending order?

Answer 29

I think it will go 5h2, -2h, -2h4, -3 and -8h3?

Answer 30

So, the exponent is the number after the variable.

Answer 31

Yeah so then it would be H?

Answer 32

H isn't a term either...

Answer 33

only other one I can think of is 5h2

Answer 34

-2h4 - 8h3 + 5h2...Yup

Answer 35

How about this one @JoannaBlackwelder

Answer 36

sGiven f(x) = the quantity of x plus 7, divided by 5, solve for f-1(3).

-20

2

8

10

Answer 37

Is f-1(3) the inverse of f at 3?

Answer 38

If so, do you know how to find an inverse function?

Answer 39

it would be -3

Answer 40

What would be -3?

Answer 41

wouldn't the 3 turned to a negative 3? Sorry I suck st algebra 2 lol

Answer 42

In the problem, is the -1 a superscript?

Answer 43

Yes?

Answer 44

Then that means the inverse of f, which is when you switch x and y, then solve for y.

Answer 45

If im understanding correctly and doing the right equation in my head the answer would be 2?

Answer 46

Once you get the inverse function, then you would plug in 3 for x.

Answer 47

The answer would be 2 if the question asked for f(3), not f inverse at 3.

Answer 48

Damn. Yeah sorry cant think to late lol ha. But im stuck in the middle of a test

Answer 49

You are almost there. When you switch x and y the function will look like:
x = (y + 7)/5

Answer 50

Solve for y.

Answer 51

8 os the answer!!!!!

Answer 52

Yay! :)

Answer 53

Ha thank you thank you. I appreciate your help! Im good for now!

Answer 54

Glad I could help. :)