Question 127431
Well, you are correct...up to a point!
You are given the slope: {{{m = -3/7}}} and a point (7, 0) and you wrote:
{{{y-0 = (-3/7)(x-7)}}} This is correct, so far. Now, it appears that you want the answer in standard form: {{{ax+by = c}}}, so...
{{{y = (-3/7)(x-7)}}} Distribute the {{{-3/7}}} to get:
{{{y = (-3/7)x + 3}}} Then multiply through by 7.
{{{7y = -3x+21}}} Now write this in standard form by adding 3x to both sides:
{{{3x+7y = 21}}}