Question

Write the equation of a line that passes through the point (-1,3) and is perpendicular to the line y=3

Answer 1

what is the relationship with perpendicular lines and their slopes?

Answer 2

the slopes are recipricol

Answer 3

negative reciprocals.

Answer 4

so you are given y = 3..the slope is ??

Answer 5

-1/3

Answer 6

y = mx + b
slope is M

Answer 7

so try it again, what is the slope of y = 3

Answer 8

-1/3

Answer 9

no the slope is 0.. think of this way - slopes are coefficients of the x variable when the y variable has a 1 in front of it.

Answer 10

oh ok

Answer 11

so negative recip of 0 is 0

so with that information..use the point given (-1,3) to find the new equation
y - y1 = m (x - x1)

remember we just determined that M = 0

Answer 12

so what is the new line?

Answer 13

this is probably wrong but...y-3=x+1

Answer 14

close :) you forgot the M

Answer 15

y - 3 = 0 (x +1)

Answer 16

and the final answer is where Y is on the side by itself..

Answer 17

y=x-2?

Answer 18

y=x+4

Answer 19

actually, y = 3

Answer 20

looks like you are not distributing properly...zero times a number is what?

Answer 21

0

Answer 22

exactly :)

Answer 23

You good on this now?

Answer 24

ok thanks again!

Answer 25

No problem...I like helping you understand versus just wanting an answer. happy studying