Question

Select the equations that are parallel and perpendicular to y = -3x - 1 and that pass through the point (3, 1).

A. parallel: y = -3x + 6
perpendicular: y = one over threex + two and two thirds

B. parallel: y = -3x + 10
perpendicular: y = one over threex

C. parallel: y = negative one over threex
perpendicular: y = -3x

D. parallel: y = one over threex + 1
perpendicular: y = 3x - 1

answer please :)

Answer 1

Can you find the slope of given line??

Answer 2

I got D for this

Answer 3

am i right?

Answer 4

trying putting points (3,1) to the answer you got.

Answer 5

No, D will not work.

Answer 6

then idk

Answer 7

can you find the slope for the line y = -3x - 1 ?

Answer 8

Start by finding slope of the equation first..

Answer 9

isnt the slope -3

Answer 10

Then for parallel line slope must be same..

Answer 11

You parallel line equation will start like: y = -3x + b

You are to find b here..

Answer 12

*your

Answer 13

yeah for y = -3x - 1 slope is -3 but now you have to find a line which is perpendicular to this line. For perpendicular line what will be the slope ?

Answer 14

its either A or B

Answer 15

Now you know your line y = -3x+b passes through point (3,1), you put x = 3 and y = 1 here to find b here..

Answer 16

You want to solve for your answer conventionally, or you just want the answer for it??

Answer 17

no i want to know how to do it

Answer 18

but the choices that are left is a and b

Answer 19

Then leave a, b, c and d. If you do right, you will get one of the options given, why are you bothering.

I said to find b there, can you find b there by putting x = 3 and y = 1 in that equation, y = -3x+b ??

Answer 20

we eliminated the choces c and d cause they dont have slope of -3

Answer 21

b= 10

Answer 22

Yes we have eliminated..

Yes so what you got as your parallel line equation now??

Answer 23

parallel: y = -3x + 10
perpendicular: y = one over threex

Answer 24

Yep...
Good..

Answer 25

If you want to do it for perpendicular then you can verify that too if you want..

Answer 26

Ok thank you

Answer 27

You are welcome dear..