Question

How do I do this?
A line has a slope of –2 and passes through the point (4, –9). Which is the equation of the line?

y = –2x – 17
y = –2x – 1
y = –2x + 1
y = –2x + 17

Answer 1

@iGreen @IMStuck

Answer 2

by equation y-y1=m(x-x1)

Answer 3

where x1 and y1 are 4 and -9 respectively

Answer 4

and m is slope that is -2

Answer 5

Y=mx+b
m=slope
Y=-2x+b
(x,y)
(4,-9)
sub in 4 where x is and -9 where y is
(-9)=-2(4)+b
-9=-8+b
Add 8 on both sides
y=-2x-1

Answer 6

so b option is correct

Answer 7

Oh, I see. :) It's a lot easier when you can see it like that. Thanks!!

Answer 8

yeah no problem!