Question 1119820
Help please.

I don’t think I’m doing it right.

Write the slope-intercept form of the equation of the line through the given points.
 (5, -5) and (-3, 4)

Am I supposed to find the slope first? m=y2-y1/x2-x1?

If so, what do you do after that.

I found 2 different slopes: 9       -9
                                       - —  &  —
                                          2        8

Any help is appreciated!
<pre>Slope: {{{matrix(1,5, (y[2] - y[1])/(x[2] - x[1]), "=", (4 - - 5)/(- 3 - 5), "=", - 9/8)}}}
Point-slope form: {{{matrix(1,3, y - y[1], "=", m(x - x[1]))}}}
{{{matrix(1,3, y - - 5, "=", (- 9/8)(x - 5))}}} ------- Substituting {{{- 9/8}}} for m, and (5, - 5) for {{{matrix(1,5, "(", x[1], ",", y[1], ")")}}}
{{{matrix(1,3, y + 5, "=", (- 9/8)x + 45/8)}}}
{{{matrix(1,3, y, "=", (- 9/8)x + 45/8 - 5)}}} ------- Subtracting 5 from each side
{{{matrix(1,3, y, "=", (- 9/8)x + 45/8 - 40/8)}}}
{{{highlight_green(matrix(1,3, y, "=", (- 9/8)x + 5/8))}}}