Question

http://prntscr.com/la4hhq

Answer 1

@Vocaloid

Answer 2

any ideas? what's the slope of the dotted line?

Answer 3

C or D??

Answer 4

this is harddd lolol

Answer 5

alright

let's compare in the y-direction only

Answer 6

try to repeat the process but in the x-direction this time

Answer 7

A?

Answer 8

yes

since the function increases 4 in the x-direction the slope is -5/4
the shading is underneath the line

so A is the only possibility

Answer 9

http://prntscr.com/la4kt4

Answer 10

any attempts to graph these two equations on the same graph?

Answer 11

C

Answer 12

good

Answer 13

http://prntscr.com/la4l3o

Answer 14

if it has the solution (-6,0) that means x = -6 and y = 0 must make both equations valid

so see which answer choice fits this description

Answer 15

B

Answer 16

yeah good

Answer 17

http://prntscr.com/la4lnn

Answer 18

identify the point where the two blue lines cross

Answer 19

B

Answer 20

good

Answer 21

http://prntscr.com/la4m0l

Answer 22

just gotta graph them and see where they intersect

be careful

Answer 23

D

Answer 24

good

Answer 25

http://prntscr.com/la4mj2

Answer 26

ugh, substitution really isn't the best way to do this one

but if they insist, start by solving 3x + 2y = 0 for x

Answer 27

D?? i think

Answer 28

yeah that's it

Answer 29

http://prntscr.com/la4msh

Answer 30

let q = number of quarters and n = number of nickels

total coins = 200 so q + n = 200
the total value is 30.00. the value of q quarters is 0.25q and the value of n nickels is 0.05n, using the values of the coins

so 0.25q + 0.05n = 30
p + n = 200

solve for

Answer 31

C?

Answer 32

*should be q + n not p + n

Answer 33

yeah good

Answer 34

http://prntscr.com/la4nkz

Answer 35

any ideas? try multiplying the equations by a whole # constant such that you can eliminate either x or y