Question

Can someone be nice enough to help me with these worksheet front and back

Answer 1

If it's possible, please use your phone or some kind of camera to take a snapshot of the worksheets. Then post the images of the worksheets to openstudy. Thank you

Answer 2

It's taking forever

Answer 3

that's ok. Sometimes tech takes a bit of time to load

Answer 4

Taking forever !!!

Answer 5

Thats the front page I need help with all of them

Answer 6

The question says 1. For each system below, decide which strategy to use. That is, which method would be the most efficient, convenient, and accurate?

Answer 7

@PillowFace750

Answer 8

ok one moment while I look it over

Answer 9

okay

Answer 10

ok seems reasonable. Did you have an idea how to start or are you completely stumped on the first step?

Answer 11

I'm confused

Answer 12

which is 1a closely similar to compared to the examples in the box above?

Answer 13

Substitution ?

Answer 14

yep, you are correct

Answer 15

start with the second equation `3x-2y = 4`

then replace all of `x` with `(4-2y)` which is the substitution step

Answer 16

so `3x-2y = 4` turns into `3(4-2y)-2y = 4`

Do you see how to solve for y?

Answer 17

Then distribute

Answer 18

yes

Answer 19

I got 12-6y-2y= 4

Answer 20

good

Answer 21

Then there are two like terms so I have to add them

Answer 22

which gets you what?

Answer 23

8

Answer 24

not just 8, but you're close in a way

Answer 25

12-8y=4 ?

Answer 26

much better

Answer 27

then what?

Answer 28

add 8 on both sides ??

Answer 29

Add 12 on both sides ??

Answer 30

not add, but you're close

Answer 31

subtract

Answer 32

if it helps, think of 12-8y as -8y+12

Answer 33

yes subtract 12 from both sides

Answer 34

y=1?

Answer 35

and x=2 ?

Answer 36

yep y = 1

Answer 37

and x = 2, good

Answer 38

Now I need help with the second one

Answer 39

ok one second

Answer 40

hopefully you agree that 1b matches with the elimination form?

Answer 41

So its elimination right

Answer 42

yes, if you were to add the equations up, notice how the y terms combine to

y+y = 2y

we want them to combine to 0y or 0. What change can we make so that the y terms add to 0?

Answer 43

subtract

Answer 44

or put another way, multiply one of the terms by -1, then add, agreed?

Answer 45

okay

Answer 46

ultimately it doesn't matter how you think of it because the two are equivalent

Answer 47

So 1b its elimination with multiplication ??

Answer 48

yes because we cannot add first until we multiply one of the equations (both sides) by -1

Answer 49

So it looks like this y+y=2y)-1