Not sure of how to do this? Write an equation of a line in point slope form that has a slope of -3 and passes through the point (3,-4)

Question

Not sure of how to do this? Write an equation of a line in point slope form that has a slope of -3 and passes through the point  (3,-4)

anonymous · Answer

$$(y-y_{1})=m(x-x_{1})$$
put the point and slope in this equation

anonymous · Answer

(3-y1)=-3(-4-x1) Huh?

anonymous · Answer

nope (x1,y1) is the point.
x and y are variables

anonymous · Answer

Okay so like this (y-3)=-3(x--4)

anonymous · Answer

Thank you Greatly!! :)

hero · Answer

Also the method I've shown uses less steps and you only need to memorize one formula. 

All you need is y = mx + b

1). Substitute the given points and the slope to find b: 
    -4 = -3(3) + b
    -4 = -9 + b
9 - 4 = b
      5 = b

2). Re-write y = mx + b but only include the values of m and b: 

y = -3x + 5

hero · Answer

I think you get it now