Find an equation of the line having the given slope and containing the given point.
m=8, (7,1)

Question

Find an equation of the line having the given slope and containing the given point.
m=8, (7,1)

whpalmer4 · Answer

Use the formula $y-y_0 = m(x-x_0)$ to write the equation of a line with slope $m$ passing through point $(x_0,y_0)$

anonymous · Answer

I thought is was y-y1=m(x-x1) why did you put 0

whpalmer4 · Answer

It's just a label.  Exactly the same result...

anonymous · Answer

I need help getting the result

whpalmer4 · Answer

What do you get if you plug in your numbers in your formula?

anonymous · Answer

I have no clue.

whpalmer4 · Answer

You have the formula.  You know that m = 8.  What do you get if you rewrite the formula with m = 8?

whpalmer4 · Answer

Wherever you see m, replace it with 8.  What do you get?

whpalmer4 · Answer

After that, replace x1 with 7, and y1 with 1 (those are the x and y values you are given for the point your line goes through).

anonymous · Answer

y-1=8x-56

anonymous · Answer

yes

whpalmer4 · Answer

Probably rewrite that as $$y = 8x-55$$

anonymous · Answer

y=8x+55

anonymous · Answer

got my sign wrong

whpalmer4 · Answer

no....
$$y-1=8x-56$$add 1 to each side
$$y-1+1=8x-56+1$$$$y=8x-55$$

whpalmer4 · Answer

Haste makes waste :-)

anonymous · Answer

I seem to have trouble with the signs cool thanks

whpalmer4 · Answer

Self-awareness is good, use it to your advantage!  If you know signs give you trouble, always check them.

anonymous · Answer

yeap