Question

Write an equation of a line that passes through the point (3, 2) and is parallel to the line y = 3x − 4.

Answer 1

@jim_thompson5910

Answer 2

y = 3x + 7
y = 3x − 7
y = 1 over 3x + 2
y = 1 over 3x − 2

Answer 3

what is the slope of y = 3x - 4

Answer 4

i havent done this is in 8 months.. can you walk me through it real quick

Answer 5

I recommend reading an article like this one

http://www.purplemath.com/modules/strtlneq3.htm

to refresh your memory

Answer 6

well i have to leave is 8 mins and its my last question.

Answer 7

will it take long

Answer 8

no it shouldn't take long, go ahead and read it

Answer 9

@jim_thompson5910 is it B?

Answer 10

what is the slope of y = 3x - 4 ?

Answer 11

@jim_thompson5910 hey i just got back... is it m=3
b=-4 ?

Answer 12

m = 3 is the slope

the b = -4 is correct, but not needed here

Answer 13

the parallel line passes through (3,2)

so x = 3 and y = 2

Answer 14

we know: m = 3, x = 3, y = 2

plug them into y = mx+b and solve for b

what do you get?

Answer 15

kk hang on

Answer 16

so wait by plugging that in i will get b?

Answer 17

yes and isolating b

Answer 18

im confused.. @jim_thompson5910

Answer 19

@sleepyjess

Answer 20

what do you get when you plugged in the values?

Answer 21

it said error?

Answer 22

don't rely on a calculator right now

Answer 23

simply replace m with 3
replace x with 3
replace y with 2

Answer 24

you use y = mx+b

Answer 25

okay so it would look like this... 2=3(3)+B

Answer 26

?? @jim_thompson5910

Answer 27

correct, that is equivalent to 2 = 9+b

so b = ???

Answer 28

=-7?

Answer 29

now we know m = 3 and b = -7 which are then plugged into y = mx+b to get y = 3x - 7

Answer 30

so i was right!! dang thats so easy but i always make it harder :( thanks man @jim_thompson5910

Answer 31

you're welcome