Question

could someone please help with 4 of my questions? im not sure what im doing incorrectly! :(

Answer 1

Write the equation of the line that is parallel to the line y = 2x + 2 and passes through the point (5, 3).

y = 2x − 7
y = −x − 2
y = 2x − 2
y = −x − 7
2. Write the equation of the line that is perpendicular to the line y = 2x + 2 and passes through the point (6, 3).

y = 2x + 6
y = −x + 3
y = −x + 6
y = 2x + 3
3. Write the equation of the line that is parallel to the line 3x − y = −3 and passes through the point (4, −2).

y = −x − 6
y = −x − 14
y = 3x − 6
y = 3x − 14
4. Write the equation of the line that is perpendicular to the line 2x − 3y = 3 and passes through the point (−8, 2).

y = x − 10
y = x + 10
y = −x − 10
y = −x + 10

Answer 2

please ask one at a time

Answer 3

I'll help with the first one

Answer 4

y = 2x + 2 has a slope of 2

anything parallel to this will also have a slope of 2

Answer 5

ok

Answer 6

so m = 2

y = mx + b

y = 2x + b .. plug in the slope m = 2

3 = 2(5) + b ... plug in the point the line goes through, (5,3)

3 = 10 + b

3 - 10 = b

-7 = b

b = - 7

so we know m = 2 and b = -7

Answer 7

which means the parallel line is y = 2x - 7

Answer 8

thank you for the first one :) i see what i did wrong on that one

Answer 9

hopefully that will help you with the rest

if not, then let me know

Answer 10

im still having a bit of trouble :/ sorry

Answer 11

its ok

Answer 12

the slope of y = 2x + 2 is m = 2

flip the fraction and flip the sign to get m = -1/2

Answer 13

so the slope of the perpendicular line is m = -1/2

Answer 14

ok got that part

Answer 15

y = mx + b

y = (-1/2)x + b

3 = (-1/2)*6 + b

solve for b

Answer 16

what do you get when you do?

Answer 17

got -36?

Answer 18

hmm a bit off

Answer 19

3 = (-1/2)*6 + b

3 = -6/2 + b

3 = -3 + b

b = ??

Answer 20

-1?

Answer 21

no you have to add 3 to both sides now

Answer 22

lol sorry... 6?

Answer 23

good

Answer 24

so the equation is y = -1/2x + 6

Answer 25

ughh... i totally dont get these... there so hard for me.. idk why!

Answer 26

keep at it and hopefully things will click better

Answer 27

only have 3 more then im down... ; p

Answer 28

try the next one and tell me what you get