Question

Which equation represents the line passing through the points (3, 2) and (−9, 6)?

x − 3y = 9

x + 3y = 9

3x − y = −9

3x + y = 9

Answer 1

what is the slope of the line through the points u r given?

Answer 2

use the formula y1-y2 = m(x1-x2)

Answer 3

and find m

Answer 4

\[y - y_1 = \frac{y_2 - y_1}{x_2 - x_1} (x-x_1)\]
\[y - 2 = \frac{6-2}{-9 - 3} (x-3)\]
\[y - 2= \frac{4}{-12} (x-3)\]
\[y - 2 = -\frac 13 (x-3)\]
\[3y - 6 = x - 3\]
simplify this now

Answer 5

m=-3