What is an equation for the line passes your point (8,9) and (10,3) ?
A) (y -9)=-3(x-8)
B) (y +9)=-3(x+8)
C) (y -9)= 3(x-8)
D) (y +9)=3(x+8)

Question

What is an equation for the line passes your point (8,9) and (10,3) ? 
A) (y -9)=-3(x-8)
B) (y +9)=-3(x+8)
C) (y -9)= 3(x-8)
D) (y +9)=3(x+8)

anonymous · Answer

well since two points on the line are given you can first find the slope of the line with the slope formula m=y2-y1/x2-x1. you can then utilize the first point, 8,9 to plug into the y-y1=(m{slope})(x-x1) and that will give you your answer. :)

anonymous · Answer

I did the first part n got -3 but then I'm  confused

anonymous · Answer

I got it

anonymous · Answer

Well, assuming -3 is the correct slope, you would just plug in 
y-9=-3(x-8)
which then becomes
y-9=-3x+24 (after distribution)
  -9          -9
then your going to minus 9 from both sides
y=-3x+15

ok

anonymous · Answer

Thanks

anonymous · Answer

no problem.