SOLUTION: Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b. (8,9); x+7y=2 y=

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Question 448767: Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b.
(8,9); x+7y=2
y=

Found 2 solutions by mananth, ikleyn:
Answer by mananth(16949)   (Show Source): You can put this solution on YOUR website!
x+7y=2
Find the slope of this line
7y=-1x+ 2
Divide by 7
y =-0.14x+0.29
Compare this equation with y=mx+b
slope m = -0.14
The slope of a line parallel to the above line will be the same
The slope of the required line will be -0.14
m= -0.14 ,point (8,9)
Find b by plugging the values of m & the point in
y=mx+b
9=-1.14+b
b=10.14
m=-0.14
Plug value of the slope and b
The required equation is y=-0.14x+10.14


Answer by ikleyn(53614)   (Show Source): You can put this solution on YOUR website!
.
Write an equation of the line containing the given point and parallel to the given line.
Express your answer in the form y=mx+b.
(8,9); x+7y=2
~~~~~~~~~~~~~~~~~~~~~~~~~~~


        The solution in the post by @mananth is  INCORRECT.
        See my correct solution below.


The original equation/line is 

    x + 7y = 2


Find the slope of this line

    7y = -1x + 2


Divide by 7

    y =  + .


The slope is  m = .


The slope of a line parallel to the above line will be the same
The slope of the required line will be .    <<<---===  not -0.14, as @mananth mistakenly states !


m= , point (8,9)

Find b by plugging the values of m & the point in

    y = mx + b

    9 =  + b

    b = 10

    m = 

Plug value of the slope and b

The required equation is  y =  + 10.    ANSWER

Solved.

----------------------------

Not only this particular problem is solved incorrectly by @mananth.

Many other similar problems were solved incorrectly by @mananth.


        Incorrectly solved are ALL similar problem, where coefficients of linear equations
        are / (should be) rational numbers, which can not be presented as finite decimal fractions.
        Then @mananth, by applying his incorrect algorithm of rounding, makes everything wrong.

                        Rounding in such situations IS NOT ALLOWED.



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