Question

Use what you know to about slope and y-intercept to graph the linear equations on the same coordinate plane provided at right.

Answer 1

A. y=1/2x-8 m= b=

Answer 2

B. y=1/2x+3 m= b=

Answer 3

C. y=1/2x-3 m= b=

Answer 4

D. y=1/2x m= b=

Answer 5

I'd suggest you enclose the slope, m, 1/2, in parentheses for clarify.

D. y=(1/2)x

What is the slope of D?

Answer 6

1/2

Answer 7

No calculations necessary; merely read the slope right off the equation. Right. m=1/2.
What about the slopes of the other 3?

Answer 8

\[\text{slope-intercept format is }y=mx+b\]\[\text{slope is in format }\frac{\Delta y}{\Delta x}\text{, the y intercept is the variable }b\]

Answer 9

For the slope of a its 1/2

Answer 10

Yes. What about b? what about c?

Answer 11

the same 1/2

Answer 12

and for their y-intercept for a its 8 and for b its 3 and for c its 3

Answer 13

For D is the y-intercept x ??

Answer 14

so 0 or x?

Answer 15

Can't say that D has no y-intercept. It does have one. Perhaps if you grph D, you'll see what the y-intercept is.

Kittiwitti1: Nice work, only you are violating the Code of Conduct by doing others' work for them and handing out answers.

Answer 16

The second part was, yes. That's why I deleted it.
I don't know why the first part was deleted though. It was just reformatting the problems.

Answer 17

So for D is 0

Answer 18

@wintersuntime did you try graphing it out ?

Answer 19

winter: "no y-intercept" actually points to a y-intercept of zero (0).

What about the other 3? You had the numbers right, but there were some sign errors.
Yes, b is 0 for D.
Try again on a, b and c.
look carefully at the original equations given.

Answer 20

No

Answer 21

D: the slope is ... ? and the y-intercept is b=?

Answer 22

1.B=8 and 2. b= 3 3. b=3

Answer 23

B=8? please explain.

Answer 24

Again, the slope format is \[y=mx+b\]If the y-intercept is -c we would get:\[y=mx+(-c)\]

Answer 25

For letter b the slope is 3

Answer 26

Aren't you supposed to find the slope, m, and the y-intercept, b (not B)?

Answer 27

both

Answer 28

I'm being picky, I know, but I want you to find the slope and y-intercept of B.
Don't write B=8; that means nothing. You meant b=8.

Answer 29

So am I suppose to graph all of them

Answer 30

not necessry, but it never hurts to draw them for the practice.
What are your answers to C?

m=
b=

Answer 31

m=1/2 b=3

Answer 32

Review your own answers. Then rethink C. What is m for C? What is b for C?

Are you sure?

Answer 33

-3

Answer 34

The y-intercept of C is not b=3.

Now you've got it; the y-int. for C is b=-3. Yes.

Answer 35

oh i forgot to put the negative sign

Answer 36

Yes, make sure you put signs where necessary. Sometimes they're the deciding factor in the right or wrong answer (:

Answer 37

Kitty: Is it necessary for you to inform us about your planned reinstatement? I think not.
Your inputs are welcome so long as you guide the other person's work and do not hand out answers (or spam).

Answer 38

Winter: Nice work. Done. Any questions?

Answer 39

Yes, Ma'am.

Answer 40

For graphing can I use the website called decimals

Answer 41

Kitti: Your Witti might be Witti-er in the Math Chat, not in a serious discussion.

Answer 42

Anything that correctly graphs these functions is fine. But I don't see the advantage of using decimals here.

Answer 43

I haven't commented in the math chat for several months, and I barely participate if at all... so I really have no idea what you are talking about.

Answer 44

The website is called decimals were u could graph

Answer 45

ANYWAY back to the topic, sorry I got off track.
Are you referring to the website desmos?

Answer 46

I'm not famiar with that site, Winter. Try it and evaluate its worth.

Answer 47

yes lol

Answer 48

desmos seems to be popular with at least some openstudy users.

Answer 49

cuz I'm bad at graphing

Answer 50

That's alright, go ahead and use it. (:

Answer 51

I have a last question

Answer 52

Thanks for your participation. Time for me to get off. Please actually try desmos and/or other graphing utilities and evaluate their worth to y ou.
Last question? Go ahead.

Answer 53

What would be the equation of a line parallel to the lines in parts (a) - (d) with a y-intercept of (0,100) ?

Answer 54

Let me turn around and ask you this: What would the y-intercept be?

b=?

Answer 55

100

Answer 56

y=0x+100?

Answer 57

i) parallel lines have equal slopes
ii) the y intercept is 100, as you've said

Answer 58

Right. You'd have a line parallel to the other four lines but with a y-intercept of 100.

Answer 59

Au revoir. Auf wiedersehen.

Answer 60

french

Answer 61

Ciao, MM. Have a good day o/

Answer 62

धन्यवाद
dhanyavaad

Answer 63

thanks so much for ur helps guys

Answer 64

That's actually French and German ☺
But, anyway. You would have equal slope for the line parallel, and the point given, (0,100) is the y-intercept. That should be enough information.

Answer 65

No problem, good luck Winter! ♣

Answer 66

thank you so much for u help once again

Answer 67

^-^