Question

the diagram shows three points: a=(-1,5) B (2,-1) and c=(0,5) a line L is parallel to ab and passes through c. find the equation of L @Godlovesme

Answer 1

so how would i start

Answer 2

do u know how to find slope?

Answer 3

y-y1 over x-x1

Answer 4

yea so can u find the slope for line ab ?

Answer 5

5--1 over -1-2 = 6/-3 = -2

Answer 6

is that correct

Answer 7

wait i'm checking

Answer 8

ok sorry

Answer 9

it's fine :) and yes u r right @musty123
so we have found the slope now it says the line should pass through point c(0,5)

Answer 10

parallel lines have the same slope so the eqn we will create should have a slope of -2
r u familiar with the point-slope form?

Answer 11

y-y1=m(x-x1)

Answer 12

omg :O u r awesome!!
so when we plug the info we have we get
y-5= -2(x-0)
can u solve for y?

Answer 13

y-5=-2(x-0)
y-5=-2x
y=3x

Answer 14

y=-3x

Answer 15

did u add -2x+5 ?

Answer 16

yes

Answer 17

y=3x

Answer 18

umm r those like terms? i mean -2x has a variable and the other one is just a number:/
besides our slope MUST be -2 since the lines r parallel the slopes should be the same

Answer 19

im nt sure

Answer 20

is that confusing?