Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
lolly
Group Title
What is an equation for the line that passes through points (–1, –4) and (1, 4)? Write the equation in slopeintercept form. (2 points)
 2 years ago
 2 years ago
lolly Group Title
What is an equation for the line that passes through points (–1, –4) and (1, 4)? Write the equation in slopeintercept form. (2 points)
 2 years ago
 2 years ago

This Question is Closed

surdawi Group TitleBest ResponseYou've already chosen the best response.2
y = mx + b m=(y2y1)/(x2x1)
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
@lolly wanna try
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
no..but i will..:)
 2 years ago

Swageraid32 Group TitleBest ResponseYou've already chosen the best response.0
(1,4), m = 4 y = mx + b Sub to find b 4 = 4*1 + b b = 0  y = 4x m = 4 means slope = 4. slopeintercept form of equation of a straight line is y = mx + b. m is the slope. b is the yintercept. your equation starts of with the slopeintercept generic form of y = mx + b replace m with 4 to get y = 4x + b your line goes through the point (x,y) = (1,4) that means the xcoordinate is 1 and the y coordinate is 4. to find the yintercept, you replace y with 4 and x with 1 in the equation and solve for b. your equation of y = 4x + b becomes: 4 = (4 * 1) + b
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
can you set up the equation? then ill solve:P
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
@swiftskier96 is that the answer http://www.algebra.com/algebra/homework/Graphs/Graphs.faq.question.233716.html hahaha
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
(x1,y1) = (–1, –4) (x2,y2) = (1, 4)
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
soo y=mx=b? isnt that for finding slope?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
yes but you need to find m 1st \[y=\frac{ y2y1 }{ x2x1 }\]
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
ook ill try it..hold on..:)
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
show me how?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
m is wrong :D
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
m= 14/14. m=3/3 m=6
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
(x1,y1) = (–1, –4) (x2,y2) = (1, 4) x1 = 1 y1 = 4 x2 = 1 y2 = 4
 2 years ago

chrispearson813 Group TitleBest ResponseYou've already chosen the best response.0
hi lolly :P
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
right..thats what i did..,.i think..?
 2 years ago

03225186213 Group TitleBest ResponseYou've already chosen the best response.0
(yy1)/(y2y1)=(xx1)/(x2x1)
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
@surdawi how did i do it rong?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
(4  4)/(1 1)= 8/2=4
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
what you did (x2y2)/(x1y1)
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
well i thought it was 6..but its not..?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
m = 4 now you choose wither point and solve for b y = 4x + b
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
k hold on ill try again..:)
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
\[m=\frac{ y2y1 }{ x2x1 }=\frac{ 4 4 }{ 1 1 }=\frac{ 8 }{ 2 }=\]
 2 years ago

03225186213 Group TitleBest ResponseYou've already chosen the best response.0
for slope slope=(y2y1)/(x2x1) it can be directly solve see the formula that i have given already
 2 years ago

03225186213 Group TitleBest ResponseYou've already chosen the best response.0
(yy1)/(y2y1)=(xx1)/(x2x1)
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
oooh!!! i got the x1and 2s switched up..ok i see..:)
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
dw:1351797990809:dw
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
the one with less numbers right?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
there is no zeros for x or y this time so pick one and solve, it doesnt matter which one
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
which one would be easier?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
either, same thing
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
k ill do the one with less numbers..:P
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
so 4=4x1=b? 4=b..but we already knew that..
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
both of them has same amount of numbers :p 4=4x1=b? ! why is there an equal to b
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
oooh! whoop..my bad..:)
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
4=8? that dosent make sense...
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
4=4x1+ b what is x1 = ?
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
no it dosent..:)
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
it should be one of the pairs either (1,4) or (1,4) 4 = 4*(1) + b
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
4 = 4 + b how can you keep b on one side?
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
by adding 4 to b?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
ok show me how?
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
4=4+b (then the 4 crosses out) +4 +4
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
4 +4 = 4 + 4 +b 0 = b y = 4x + 0
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
where did the other set of 4=4 come from?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
you have to add 4 to both sides
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
passes through points (–1, –4) and (1, 4)?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
Anamaria what grade you in?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
you should know how to add :P
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
lol i do know how to add:)
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
4=4+b (then the 4 crosses out) +4 +4 was this rong?
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
lol @surdawi u sleeping?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
i went to pray dw:1351801108941:dw
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
lol were u praying that id understand how to do this? lol jk ook umm anyway i thought b=4?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
lol muslims pray 5 times a day not only sundays :P ok plug in b = 4 to check y = 4*x + 4 (1, 4) 4 = 4*1 + 4 4 = 8? is that right
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
4 is not 8...? im so confused!!
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
thats would be the answer if b was 4 correct answer is y = 4x + 0 = 4x plug in and check and where is my medal at??
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
do you want me to give you problem to do?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
try solving this What is an equation for the line that passes through points (2,5) and (6,7)? Write the equation in slopeintercept form. (you pay $10 hehe)
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
noo i dont want another problem im too stuck with this one..:)
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
tell what you dont understand dw:1351802673845:dw
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
i dont really understand what you did..like at all... for the one on the right side...
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
ok (1,4) now we need to substitute that into y =mx + b y = 4 x = 1 m = 4 y = m* x + b 4 = 4*(1) + b 4 = 4 + b we now need to add a 4 to both sides 4 = 4 + b +4 +4  0 = 0 + b ===> b = 0
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
ok so b = 4 and 0?
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
no only 0 how do you get the 4?
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
what we did earlier..
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
we never got b = 4 we got m is 4
 2 years ago

surdawi Group TitleBest ResponseYou've already chosen the best response.2
i have to go to my Advance Engineering Math :( right now; which doesnt look like anything on here...try to figure it out; if you still have problems feel free to message me the answer is y = 4x
 2 years ago

lolly Group TitleBest ResponseYou've already chosen the best response.0
k thanks 4 ur help:)
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.