Question

http://prntscr.com/nanq42

Answer 1

@Vocaloid

Answer 2

C?

Answer 3

yeah

Answer 4

http://prntscr.com/naojpi

Answer 5

that open circle means composition

g is first, that means you need to take the entire f(x) function and plug it into x in the g(x) function, then simplify

Answer 6

Im confused loll

Answer 7

f(x) = 2x - 1
g(x) = x + 2

take f(x) and replace "x" with the g(x) function "x+2" and simplify

Answer 8

D

Answer 9

good

Answer 10

http://prntscr.com/naotmi

Answer 11

pick two points (for example I see (0,-3) and (3,-4) and apply the slope formula

Answer 12

(y2 -- y1) / (x2 -- x1)

(-4-(-3) / (3-0) ?

Answer 13

yeah keep going

Answer 14

-1/3 ?

Answer 15

good, -1/3 is your solution

Answer 16

http://prntscr.com/nap1jk

Answer 17

so you want to repeat the process from before (find the slope) by finding two points on the graph and calculating the slope

then after that the equation is y = mx + b
where m is the slope and b is the y-intercept

Answer 18

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

(y2 -- y1) / (x2 -- x1)

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

Answer 19

(0,1) is not a point on the graph (you might have been thinking of 1,0)

Answer 20

(0,-4) and (1,0)
(1-(-4)) / (0-0)

Answer 21

careful

(y2-y1) / (x2-x1)
(0 - (-4)) / (1-0)

Answer 22

Yes so that would be 4

Answer 23

good, slope is 4, keep going

Answer 24

y=4x+

idk what the y intercept is

Answer 25

where does the graph cross the y-axis?

Answer 26

-4

Answer 27

?

Answer 28

yeah

so y = mx + b becomes y = 4x - 4

Answer 29

now do I solve for y or?

Answer 30

that's it, it wants the equation

Answer 31

http://prntscr.com/napqwp

Answer 32

again y = mx + b where m is the slope and b is the y-intercept

Answer 33

so do I have to do the same thing I did before?

Answer 34

they give you the slope and intercept in the problem

Answer 35

then after that the equation is y = mx + b
where m is the slope and b is the y-intercept

y=-1x+5 ?

Answer 36

yeah but we usually write this as y = -x + 5

Answer 37

the 1 is implied

Answer 38

Ohh okay so thats the answer

Answer 39

yes.

Answer 40

http://prntscr.com/naq0c2

Answer 41

first treat the green line as a normal line and write the equation for it

then, choose the correct sign (>, <, etc.) based on where the shading is and what type of line (dashed vs solid) it is

Answer 42

How can I determine a equation for a line on a graph again?

Answer 43

please refer to our previous examples
pick two points, apply the slope formula, find the y-intercept, then y = mx + b.

Answer 44

start with (1,0) and (0,3) since these are points on the graph