Write an equation in slope-intercept form that passes though thee point (3,-9)

Question

anonymous · Answer

is there a second point?

anonymous · Answer

No

anonymous · Answer

It has the slope of -5

anonymous · Answer

well then, for fun you can set the slope to be "-3"
  y=mx+b
we will need to find a proper b then
given that the point passes though (3, -9) and that we will set the slope m as -3  now solve for b

that will give you

  y= -3x + ____

and this will be one possible answer

anonymous · Answer

oh, you know the slope... that is slightly different
you do the same thing, but plug in your proper slope rather than my -3 and you will again solve for b..  This will give you a slightly more interesting b than my example above but the mechanics are the same.

anonymous · Answer

if you know the slope is 5 plug it into $y=mx+b$ along with the given x and y and solve for b
once you find b plug it and the slope into the formula and that is its slope intercept form

anonymous · Answer

Wait How Do I Find B This Is All New To me

anonymous · Answer

plug in the values:$$-9=-5(3)+b$$multiply:$$-9=-15+b$$add 15 to both sides:$$4=b$$plug in the slope and b to the formula:$$\large{y=-5x+4}$$

anonymous · Answer

and that would be your answer @TajaAmari