Question

what is the equation of a line that has a slope of -1 and passes through the point(-3,12)??

Answer 1

Do you know point slope form of the equation of a line?

Answer 2

no

Answer 3

\[y-y _{1}=m(x-x _{1})\]

Answer 4

dont i need two points??

Answer 5

replace ysub1 with 12. replace m with -1. replace xsub1 with -3 and solve for y

Answer 6

ok im a little lost now

Answer 7

wont i still have x?

Answer 8

\[y-12=-1(x- -3)\]

Answer 9

\[y-12=-1(x+3)\]

Answer 10

\[y-12=-x-3\]

Answer 11

y=-x+9

Answer 12

ohhh ok i understand now thanks again..

Answer 13

And that is the equation of a line whose slope is -1 and passes through the point
(-3,12).