Question

Help with slopes!!

Answer 1

Is there a specific question? or do you just want an explanation of slope

Answer 2

Which of the following have a slope of 5 and a y-intercept of-3

Answer 3

A.y=-5x-3
B. y=-5x+3
C. y=5x+3
D. y=5x-3

Answer 4

those lines are all in slope-intercept form, that is\[y=mx+b\] where m is the slope, and b is the y-intercept (that's why it's called slope-intercept form! :D)

Answer 5

Do you know how to find slope from an equation?

Answer 6

Yes but they have to have a slope pf 5 and a y-ontercept of -3

Answer 7

Not really

Answer 8

Which one has 5 as m and -3 as b in y=mx+b?
Remember that something + a negative is just like subtracting that number. So, x+ (-y) is the same as x-y

Answer 9

(in y=mx+b form)

Answer 10

I would think D. but I'm guessing

Answer 11

Why D?

Answer 12

why guess? You're asked for the slope-intercept form for a line with slope 5, y-intercept -3.
\[m=5\] \[b=-3\] \[y=mx+b\]

Just substitute

Answer 13

So c?

Answer 14

Just by plugging in

Answer 15

are you guessing? or did you substitute?

Answer 16

Remember what I said earlier? Adding a negative is the same as subtracting

Answer 17

Well y=mx+b so
you just put in 5 and 3 for m and b?

Answer 18

the y-intercept isn't 3

Answer 19

so if you are adding -3, its like subtracting 3!

Answer 20

:D

Answer 21

Then what is it?

Answer 22

the question tells you what the y-intercept is

Answer 23

Its -3

Answer 24

yes. substitute that for b in the slope-intercept equation

Answer 25

so in y-mx+b since it is NEGATIVE 3, its really y=mx-3, see?

Answer 26

\[3 \neq -3\]

Answer 27

So A. since your subtracting it?

Answer 28

A has -5 as the slope though. \[5\neq-5\]

Answer 29

\[y=mx+b\]
\[m=5\] \[b=-3\]
substituting...\[y=(5)x+(-3)\]

Answer 30

so d?

Answer 31

plug them in lol

Answer 32

remember what @trantom said about adding a negative number

Answer 33

Im so confised

Answer 34

duh D

Answer 35

what's the simplified version of\[y=(5)x+(-3)\]

Answer 36

because y=mx+b

Answer 37

m=x and b=y

Answer 38

y=5x-3?

Answer 39

yes

Answer 40

yes

Answer 41

lalala101 give her a break shes trying to get help not get insulted!

Answer 42

i'm not lol

Answer 43

"D, duh" That sounds like a taunt to me

Answer 44

ok thank you guys

Answer 45

if it sounds like i did, i apologized

Answer 46

our pleasure. good luck!

Answer 47

theres the spirit! :D