Question

Algebra 2 help plz

Answer 1

Let f(x) = 9x - 2 and g(x) = -x + 3. Find f(g(x)).

-9x - 2

-9x + 5

-9x + 25

-9x + 27

Answer 2

Let f(x) = -4x + 7 and g(x) = 10x - 6. Find f(g(x)).

-40x + 24

-40x + 31

-40x + 64

-40x + 70

Answer 3

im not sure because i dont see the answer i got

Answer 4

well because f(x) = g(x)
so g(x) is x of f(x)
so you put the eqaution of g(x) into the the equation of f(x)

Answer 5

In both of them, you just need to put g(x) instead of x in f(x).
For the first one:
f(x)=9x-2 then
f(g(x))=9(-x+3)-2
=-9x+27-2
=-9x+25
I leave the second one to you

Answer 6

yeah what kagitucak said or wrote

Answer 7

i did that but got -9x-1?? and -40x-1??

Answer 8

and the second one is the same step

Answer 9

what did i do wrong??

Answer 10

yeah because you subtracted first instead of multiplying what was in the paranthesis

Answer 11

so would it be -40x+33??

Answer 12

31

Answer 13

for the second one??

Answer 14

i thought the first one was -9x+25

Answer 15

yes you are correct

Answer 16

ok and wb the second one??

Answer 17

second one would be B

Answer 18

are you fuys good with sqrt and extraneous and non extraneous??

Answer 19

Square root of x plus 6 − 4 = x
Square root of x plus 6 − 4 + 4 = x + 4
Square root of x plus 6 = x + 4
(Square root of x plus 6)2 = (x + 4)2
x + 6 = x2 + 8x + 16
x + 6 − 6 = x2 + 8x + 16 − 6
x = x2 + 8x + 10
x − x = x2 + 8x + 10 − x
0 = x2 + 7x + 10
0 = (x + 2)(x + 5)

x + 2 = 0 x + 5 = 0
x + 2 − 2 = 0 − 2 x + 5 − 5 = 0 − 5
x = −2 x = −5

Solutions = −2, −5

What error did Israel make?

Answer 20

He subtracted 6 before subtracting x.

He added 4 before squaring both sides.

He factored x2 + 7x + 10 incorrectly.

He did not check for extraneous solutions.

Answer 21

is it d??

Answer 22

hmmm

Answer 23

i think its d i dont see anything else worng

Answer 24

well i think that it is D too but im not sure because i hate word problems

Answer 25

lol

Answer 26

wb this one??

Violet was carrying around the steps to solve Square root of 3x plus 1 = 4. On her way through the Math Factory, Violet dropped them and they mixed with other steps. Put the correct steps in order to solve Square root of 3x plus 1 = 4.


A. Subtract 1 from both sides B. Subtract 4 from both sides C. Square root both sides
D. Square both sides E. Divide by 3 from both sides F. Divide by 4 from both sides
First A, then E, then D

First D, then B, then A

First D, then A, then E

First C, then E, then A

Answer 27

so the equation is\[\sqrt{3x + 1}=4\]

Answer 28

if so first is D

Answer 29

then A

Answer 30

then E

Answer 31

sorry my comp spazed

Answer 32

@ShailKumar

Answer 33

i have a diff q those where answered

Answer 34

Post it

Answer 35

Determine the equation of the line, in standard form, that will get your spacecraft from the Launch Area to Point A. Launch Area: (1,2), Point A: (0, 3)

Answer 36

i got x+y=2

Answer 37

How did you get that ?

Answer 38

i got -1/1 and plugged it in to y-2=-1(x-0)

Answer 39

then cpmverted

Answer 40

You have plugged in wrong point. You should plug in e.g (1,2) then you should get
y-2 = -1(x-1)

Answer 41

ohhhhhhhh

Answer 42

so x+y=1

Answer 43

??

Answer 44

Yes. Now it's correct. :)

Answer 45

Determine the equation of the line, in point-slope form, that will get your spacecraft from Point A to Point B. Point A: (0,3), Point B: (-3, 0)

Answer 46

Show me your work

Answer 47

y-3=-3(x-0)

Answer 48

@AnswerMyQuestions

Answer 49

the eqaution is simple just plug in the points
y - y2 = m(x-x2)

Answer 50

Slope is 1

Answer 51

oh yeah but wouldnt it be negative??

Answer 52

No

Answer 53

ok

Answer 54

Determine the equation of the line, in slope-intercept form, that will get your spacecraft from Point B to Point C. Point B: (-3, 0), Point C: (-1, -4)

Answer 55

its the same thing

Answer 56

find the slope plug it in

Answer 57

slope is y2-y1/x2-x1

Answer 58

Slope intercept form is y = mx+c

Answer 59

the slope is -2 right

Answer 60

c is the intercept.

Answer 61

^

Answer 62

Correct

Answer 63

so y=-2x+??

Answer 64

y-0=-2(x+3)

Answer 65

y=-2x=5??

Answer 66

6

Answer 67

-6

Answer 68

y=-2x-6 lol

Answer 69

that correct

Answer 70

Yes

Answer 71

yay lol

Answer 72

5) Convert the equations you arrived at in question 2 into slope-intercept form. Make sure to include all of your work.

Answer 73

x+y=1

Answer 74

??

Answer 75

i have to put x+y=1 in to slope intercept

Answer 76

is it y=-x+1

Answer 77

Correct

Answer 78

last one lol

Answer 79

Reflect back on this scenario and each equation you created. Would any restrictions apply to the domain and range of those equations? Explain your reasoning using complete sentences.

Answer 80

wait first close this tab and create a new one please with all the scenarios together

Answer 81

ok