Find an equation of the line having the given slope and containing the given point.
m=8, (2,1)
the equation of the line is y=?

Question

Find an equation of the line having the given slope and containing the given point. 
m=8, (2,1)
the equation of the line is y=?

sidsiddhartha · Answer

equation of a line having slope=m and passing through points (x1,y1) is
$$(y-y_1)=m(x-x_1)$$
here you have
m=8
x1=2 and
y1=1 
now just plug the values

anonymous · Answer

How do i do that?

sidsiddhartha · Answer

m=8
x1=2 and
y1=1 
just put them in the above equation

anonymous · Answer

1y-1y=8x-x

sidsiddhartha · Answer

nope
its
$$y-y_1=m(x-x_1)\y-1=8(x-2)$$
ok?

anonymous · Answer

ok

sidsiddhartha · Answer

:)

anonymous · Answer

thats the answer?

sidsiddhartha · Answer

u can simplify it a bit use simple alzebra

anonymous · Answer

$$y=8 x-15 $$

sidsiddhartha · Answer

yup

anonymous · Answer

its saying thats wrong @robtobey

mrnood · Answer

@MarthaHearst 
@robtobey - it is is not encouraged to post the complete answer. The OP had plenty of opportunity to do some of this with help above.

The answer IS correct - your book must be wrong, or you have posted the question incorrectly

anonymous · Answer

@MrNood who are you?

anonymous · Answer

apply the formula
y2-y1=m(x2-x1)
where m is the slope

mrnood · Answer

@rosebird 
Why would she need to do that now? She has been given the correct answer by someone else, and has had no need to begin to understand the straight line formula concepts that she is studying

anonymous · Answer

ok mind ur own busines please @MrNood

mrnood · Answer

It is everyone's business that education gets pupils to understand, NOT just to simply tick a box on a multichoice question

anonymous · Answer

yeh i know but i posted the answer so whats the matter with u?

anonymous · Answer

@MrNood