Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

hartnn Group TitleBest ResponseYou've already chosen the best response.1
can you find slope of any given line ?
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
like say , x5y = 10 is a line. can you find slope of this line first ?
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
Uh no not really... with a quick review I probably can
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
good, so i have x5y =10 i will try to isolate y and bring it in the form y=mx+c where m=slope so, x=5y10 5y = x+10 y= (1/5)x +2 got this ?
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
Yeah I got it
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
cool, so can you find the slope of x 3y=9 line ? in same way
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
oh and i forgot to mention, y= (1/5)x +2 comparing with y=mx+c gives, m=slope = 1/5
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
x37=9 3y=x+9 Y=(1/3)x+3
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
So slope would be 1/3 I assume?
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
correct! :) now try to find slopes of other 3 lines also! and tell me, so that i will verify :)
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
4x+2y=5 2y=4x+5 Y(1/2)x+2.5 ?
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
2y=4x+5 is correct, but then divide both sides by 2 what u get ?
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
10x5y=8 5y=10x+8 Y=2x+1.6?
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
10x5y=8 5y=10x+8 <<<<<<NO! 5y = 10x +8
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
and you would get y=2+2.5
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
Ahh okay 10 so the problem would come out with a positive 2x
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
yes, so the slope will be m= 2 , right ?
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
4x+2y=5 slope = 2 make a note of all slopes, we'll need them
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
and what about last line ?
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
4x+y=1 Y=4x1
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
so, slope =?
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
Good! now here's the rule : slope of parallel lines are equal! so, for the last one, slope of line parallel to 4x+y=1 will also be m=4 :) so, for last, the correct option will be `C) m=4` got this ? in same way, can you match the 2nd last and 3rd last ?
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
Yeah I got it, Thanks a ton man. You need to be my teacher xD
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
haha, :) but we still require to do the 1st 2 !
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
another rule, `product of slopes of perpendicular lines = 1 ` so, for 1st one we had slope = 1/5 let slope of perpendicular line be m. so, \(\Large m\times (1/5)=1\) find m from here :)
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
1st one is m=1/5? 2cnd one is m=1/3? It seems like these would be the answers but they are not possible to be selected.
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
Ahhhh okay
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
because perpendicular lines follow different rule :)
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
Well I still don't exactly get how it goes from (1/5) to 1...
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
product of slopes = 1 is the rule so, m (1/5) =1 multiplying by 5, m = 5 got this ?
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
multiplying by 5 on both sides.
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
I'm confused on the product of slopes part, I get the multiplying on both sides. So like can you explain the product of slopes rule.. I tried looking it up on google but nothing I can comprehend really comes up.
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
if say line 1 has slope M1 and line 2 has slope M2 now if these 2 lines are perpendicular to each other, then M1*M2 =1
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
another way to remember the same thing is, the slope of line is negative reciprocal of the perpendicular line, so, slope of line perpendicular to line with slope 1/5 will be  (1/(1/5)) = 5
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
so, thats your 1st one, m =5 for 2nd one, we had slope = 1/3, so m *(1/3) = 1 so, m=3 is the answer to 2nd one :)
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
Okay, so basically whenever there is a fraction just take (1/_) blank space number lol
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
you forgot the negative :P 1/ stuff
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
but this only applies to perpendicular lines
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
for parallel lines, slope are equal
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
Oh I see says the blind man
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
i hope you got the entire problem clearly ?
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
ask if any doubts anywhere
 9 months ago

Mttblink Group TitleBest ResponseYou've already chosen the best response.1
Yeah I get it now man thanks a ton
 9 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
welcome ^_^
 9 months 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.