# math

I need help with a question...

In this case k and l are parallel lines and contain the given points of: k=(2,5),(8,14) and l=(5,3),(11,y)... how do I calculate for y?

Please help!

1. 👍 0
2. 👎 0
3. 👁 86
asked by Cici
1. I hope you are not taught to use a notation like
k=(2,5),(8,14)
to represent a line through those two points, anyway ...

the slope of the first line is (14-5)/(8-2) = 3/2

the slope of the second line is (y-3)/(11-5) = (y-3)/6

but parallel lines have equal slopes, so ...
(y-3)/6 = 3/2
2y-6 = 18
2y=24
y=12

y = 33/2

1. 👍 0
2. 👎 0
posted by Reiny

## Similar Questions

1. ### geometry

Martin drew a pair of perpendicular lines and a pair of parallel lines. Which of these statements best compares the pairs of perpendicular and parallel lines? Answer A: Perpendicular and parallel lines always have a common

asked by Sam on September 25, 2011
2. ### Geometry

Solve for x 5/3 / 4/3 = x / 20/9 x= 25/9 =2.77777.... 5/4 = x/3 x= 15/4 = 3.75 20/36 / 21/x x= 189/5 = 37.8 x/6 = x+1 / 9 x= 2 Tell whether the lines are parallel based on the given proportions (I think they are supposed to come

asked by Anonymous on April 26, 2009
3. ### Geometry

Solve for x x/6 = x+1 / 9 x= 2 Tell whether the lines are parallel based on the given proportions (I think they are supposed to come out equal in order for the lines to be parallel) 16/4 = 8/2 32=32 yes, the lines are parallel

asked by Anonymous on April 24, 2009
4. ### Algebra 1

1. Which line is the flattest (or is less steep)? Why? y = 5x -6 y = 5x + 6 y = x - 3 y = x + 3 I think it's the last one! Parallel lines have the same slope. The first two are parallel lines with the steepest slope; the last two

asked by Margie on October 13, 2006
5. ### maths

If two non parallel lines are perpendicular to other two non parallel lines prove that acute angel between first two non parallel lines is equal to acute angle between other two non parallel lines

asked by Anonymous on July 17, 2016
6. ### Math

Are these correct with the lines y=0.15x+0.79 0.11x-y=-0.85 The line represents an estimate of the average cost of gasoline for each year. The line estimates the price of gasoline in January of each year (Bureau of Labor

asked by Anonymous on June 18, 2008
7. ### Plz Check My Geometry

Out of 30 questions these few I struggled with. I put what I feel was right but to be sure I would like some one to check my answers and if there wrong redirect me on how to get the correct answer.( after the = is the answer i

asked by Ariel on June 9, 2010
8. ### Plz Check My Geometry

Out of 30 questions these few I struggled with. I put what I feel was right but to be sure I would like some one to check my answers and if there wrong redirect me on how to get the correct answer.( after the = is the answer i

asked by Ariel on June 9, 2010
9. ### art

why do artist use parallel lines that do intersect?? Thank you for using the Jiskha Homework Help Forum. Here is a definition of parallel: extending in the same direction, everywhere equidistant, and not meeting Just what art are

asked by K on July 30, 2007
10. ### Math

A trapezoid has to have one pair of parallel lines, right? If a shape isn't a trapezoid because it has no parallel lines, no equal sides, but has four sides, what is it? The question wanted the best descriptive name.

asked by Catherine on March 7, 2011

More Similar Questions