Question

The equation of line AB is y = 5x + 1. Write an equation of a line parallel to line AB in slope-intercept form that contains point (4, 5).

y = 5x − 15

y = 5x + 15

y = 1 over 5x + 21 over 5

y = 1 over 5x − 29 over 5

Answer 1

@turqoisetuna

Answer 2

@jeremyggg

Answer 3

well first off, lines that are parallel share the same slope

Answer 4

what is the mathematical criterion for two straight lines to be parallel?!

Answer 5

hold on let me find what you'll need to solve this i cant remember

Answer 6

y=mx+b

Answer 7

im trying to slve it with y-y1 = m(x-x1)

Answer 8

slope intercept form is y-y1 = m(x-x1)

do you know the equation for finding slope??

Answer 9

yes i do y2 - y1 / x2 - x1

Answer 10

good

Answer 11

well you wont need it really, but thats good.
what is the slope of the given equation??

Answer 12

5

Answer 13

welllll only 2 of those answers actually will include the point (4,5) right?

Answer 14

perfect!
now all you have to do is plug that slope, and the point of the parallel line into the slope intercept form equation!

Answer 15

When you do this, what answer do you get?

Answer 16

A. y = 5x - 15

Answer 17

YAY! good job :)

Answer 18

thanks so much!!!

Answer 19

Youre welcome. Does that help you in solving another question like this?

Answer 20

you guys are the best! i wish i could give all of you medals & yes

Answer 21

Awesome, no worries. Glad I could help

Answer 22

if you get stuck, just try and see which ones would actually give you the point (4,5). only one of those had a matching slope!

Answer 23

Good point! Gosh, don't ya love math haha :P