Question 1080786
Using the given equation find the missing coordinates of the points and then find the slope of the line for each equation
y=−3/7x+3;  A(...; 6), B(9; ...)

i found the slope which was -3/7
<pre>The slope is right there for you to see, but you don't need it.

Let missing x and y-coordinates be {{{matrix(1,5, x[1], and, y[2], ",", respectively)}}}
{{{6 = - (3/7)x + 3}}} ------- Substituting 6 for y in equation
{{{(3/7)x = 3 - 6}}}
{{{3x/7 = - 3}}}
3x = - 21 ------- Cross-multiplying
{{{matrix(1,3, x[1] = - 21/3, or, - 7)}}}.
We then have: {{{highlight_green(matrix(1,5, "A(...;", "6)", "=", "A(- 7,", "6)"))}}}  
Do the same thing to get the other missing coordinate, ({{{y[2]}}}).