Question

HELP!! quick question...GIVING OUT MEDALS!
write an equation in slope-intercept form for the line that passes through the given points AND is PERPENDICULAR to the given line
(5, -1); y=4x-7

Answer 1

what?

Answer 2

Do you need work?

Answer 3

yeah i need some help and a quick explanation please

Answer 4

ok. I will draw it out.

Answer 5

ok would be appreciated if it was also explained in words too

Answer 6

Sorry about the typo

Answer 7

yeah no probelm

Answer 8

but one question, how is this perpendicular to the given line

Answer 9

ok what you do is you take the slope of the original line and when you do the negative reciprocal of it, it makes the slope perpendicular.

Answer 10

the given line was the points i listed and i dont understand how this is perpendicular to these points

Answer 11

It is trust me. go ahead and graph it you will find out

Answer 12

but isnt that what you do if your trying to find a parallel line to the given points

Answer 13

no parallel line is the same slope different b point.

Answer 14

oh okay i get it

Answer 15

could you help me with another question and also check some of my before answers ?

Answer 16

uh sure. IS this question closed?

Answer 17

no not yet its still open and i rewarded you a medal

Answer 18

k great. What is your next question?

Answer 19

one quick question before we proceed, for this problem you listed b=-1+5/4 and then said find what B equals, is that what b would equal or how do i find b

Answer 20

b will equal to -1+5/4. Whatever you get will equal to the b in the perpendicular equation

Answer 21

oh okay cool

Answer 22

another question about the perpendicular stuff

Answer 23

same question different points

Answer 24

write an equation in slope-intercept form for the line that passes through the given point AND is PERPENDICULAR to the given line
(4, -2); y=3

Answer 25

@elliecosme @nannerbug39 if you guys cant help with this please stick along so you can check answers for a couple questions after this one thanks

Answer 26

ok. Think logically. To get a perpendicular line, you know the line must be x= to something. Now, it says 4,-2 so what you know that 4 must be x.

Answer 27

and @Daredevil666 too

Answer 28

ok ill watch what you post to help

Answer 29

ok now the equation is y= 0 and x=4. so y= x+ b. So 0= 4+ b. b= -4. SO the equation should be x=4 + b

Answer 30

how is y=0

Answer 31

you say y= to 0 but i dont see a zero in the points at all could you please explain how y = 0 @Daredevil666

Answer 32

y must be 0 because it has to be perpendicular to the y line

Answer 33

oh okay i see but if y has to be 0 then why does it say (4, -2) in the given points
-2 should be the y and the line should be perpendicular to these points
correct?

Answer 34

oh my bad. I am sorry. I made a mistake. y gives you where the line will be graph point 4, -2 and draw a line going to the right and left.

Answer 35

That will give you the line which you are supposed to have. Your y intercept would be -2

Answer 36

so it would look like this:
y=-2
x=4
so y=x+b or -2=4+b
and b=-4

correct?

Answer 37

@nannerbug39 what do you think so far

Answer 38

no b = -2. Your equation should be x=4 and y intercept = -2

Answer 39

so what does y equal

Answer 40

if b=-2 and x=4 what would y equal...still zero?

Answer 41

@primeralph what do you think

Answer 42

you seem like you know some math with all of those fans and medals @primeralph any help you can give

Answer 43

i believe y should still equal o due to it having to be perpendicular to the y line

Answer 44

oh okay so the only thing that changed was b?
from -4 to -2 after the mistake was found?

Answer 45

but if x-y+b=0