Question

whats the equation of a line that passes through (-1,3) and (-3,7)??

Answer 1

use slope formula
\[slope=\frac{y-y_1}{x-x_1}\]

Answer 2

haha i know, slope is -2 but everytime i get an answer, it doesnt match the point so im doing something wrong

Answer 3

then pick any ONE of the two points, then use the formula

\[y-y_1=m(x-x_1)\]

Answer 4

i did! and the equation comes up as y=-2x+11, it doesnt match the point

Answer 5

when you plug in the numbers

Answer 6

I get y=-2x+1, did you do the subtraction correctly?

Answer 7

y-7=-2(x-(-3))
y=-2x-6+7

Answer 8

oh, thanks! i mistakenly put the -3 on y and the 7 on x