Question

The equation of line AB is y = 2x + 4. Write an equation of a line parallel to line AB in slope-intercept form that contains point (3, −2).

y = 2x + 4

y = negative 1 over 2x − 1 over 2

y = − 1 over 2x − 7 over 2

y = 2x − 8

Answer 1

@rose21

Answer 2

y = 2x + 4
parallel means must have same gradient
so options 2 qnd 3 are out
option 1 is the same equation... so its out
must b option 4

Answer 3

proof:

Answer 4

parallel lines have negative answers?

Answer 5

y = 2x − 8
contains point (3, −2)?
y = 2x − 8
y = 2*3 − 8
y = 6 − 8
y = -2

Answer 6

so its D?

Answer 7

parallel lines have negative answers?
no, parallel lines have different number for "b"
y = mx + b
so if equation is identical but with a different B value... it's parallel

Answer 8

is d, but understand y?

Answer 9

yes thank you so much. how do i give you a medal?

Answer 10

yw, and if u really wanna its the "best response" button ;D

Answer 11

de nada ms fuentes ;D
slaters

Answer 12

ooh okay thanks and i already did <3 may you help me with one more ?

Answer 13

sure, shoot

Answer 14

Line WX contains (−1, 2) and (4, 12) Line YZ contains points (5, 8) and (−2, −6). Lines WX and YZ are

perpendicular because the slopes are the same

parallel because the product of the slopes is −1

perpendicular because the product of the slopes is −1

parallel because the slopes are the same

Answer 15

i used the slope formula for the first two and i got 3.33333

Answer 16

so what is gradient of each...? ("m" value)

Answer 17

for the second one i got 1.5714

Answer 18

they are perpendicular

Answer 19

Line WX:
(−1, 2) and (4, 12)
(x1, y1) and (x2, y2)

y2-y1 / x2-x1 =m
12-2 / 4 --1 = m
6/5 =m

Answer 20

Line YZ:
(5, 8) and (−2, −6)
(x1, y1) and (x2, y2)

y2-y1 / x2-x1 =m
-6-8 / -2 -5 = m
-14/-7 =m

Answer 21

i dont understand

Answer 22

-2

Answer 23

for the second one and the first one is 1.2

Answer 24

oooh now i get it! its D

Answer 25

they both equal to 2

Answer 26

you're right, Line WX:
(−1, 2) and (4, 12)
(x1, y1) and (x2, y2)

y2-y1 / x2-x1 =m
12-2 / 4 --1 = m
10/5 =m
2 =m
sorry... :(


a line perpendicular to 2/1 would have a gradient of 1/2
a line parallel to gradient 2 would also have gradient of 2
so they're parallel

Answer 27

yea thats what i got lol Thank you so much!!!

Answer 28

all good, my bad

Answer 29

yay! i got a 20/20

Answer 30

props ;D

Answer 31

you are the best! ill keep you in mind

Answer 32

ooo ;)

Answer 33

lol byee <3 :*

Answer 34

slaters