Question

I DON'T UNDERSTAND WHY MY ANSWER IS NOT CORRECT :( SLOPE IS -9/11 AND THE
EQUATION IS -9X/11+44

Find the equation of the line parallel to -9x-11y=-2 and passing through the point (5,-1).
The equation of the line is ??

Answer 1

The slope of -9x-11y=-2 is -9/11
So plug that slope and the given point into point-slope form:
\[y-y _{1}=m(x-x _{1})\]

Answer 2

i did..

Answer 3

@mathcalculus you did your algebra incorrectly, it appears...

Answer 4

can you point it out where?

Answer 5

\[y-(-1)=\frac{-9}{11}(x-5)\]

Answer 6

Simplify and you will be done.

Answer 7

i have this: y=9x/11 +44

Answer 8

your y-intercept value will be a fraction...maybe you didn't multiply the -9/11 when expanding

Answer 9

@whpalmer4 i'm not sure where I have made my mistake.

Answer 10

\[1+y = \frac{1}{11}(45-9x)\]probably screwed up bringing the 1 across

Answer 11

\[y+1=\frac{-9}{11}x+\frac{45}{11}\]

Answer 12

isn't y- (-1) a y+1?

Answer 13

so if i bring it to the other side it must be subtracted from the 45

Answer 14

oh yes! got it

Answer 15

damn

Answer 16

9/11 * 5

Answer 17

\[y=\frac{-9}{11}x+\frac{45}{11}-1=\frac{-9}{11}x+\frac{34}{11}\]

Answer 18

subtract 11/11 from each side:

\[y+1 - 11/11 = \frac{1}{11}{45-11-9x}\]\[y = \frac{1}{11}(34-9x)\]\[y = -\frac{9x}{11}+\frac{34}{11}\]

Answer 19

whoops, used invisible () in that first eq. :-)

Answer 20

that's not the answer..... :(

Answer 21

it keeps saying it's wrong.

Answer 22

i think it's the website, it must be correct. thank you everyone.

Answer 23

well, that in fact is the equation of a line parallel to the original line, passing through -5,1 as you can see in this graph:

Answer 24

Check the rules for entry. Maybe you are entering the fractions incorrectly or maybe you are not supposed to write y = or maybe they want the equation in some other form besides slope-intercept form.

Answer 25

(5,-1) that is

Answer 26

yes, I checked. appreciate the help

Answer 27

yup

Answer 28

it must be correct, even the calculator shows it.

Answer 29

Maybe you want to try 9x+11y=34

Answer 30

I'll sometimes multiply by the denominator of the fraction, do the problem without the pesky fractions and accompanying mistakes, then divide again by the former denominator for the final answer.

Answer 31

I'd say you know what you're doing, in any case...watch for those fraction mistakes :-)

Answer 32

thanks alot ! :)

Answer 33

yw