SOLUTION: Can someone please explain how to figure this problem? Determine the equation of the line that has a slope of -3 and passes through the point (-3,0). Write the equation in slope in

Algebra ->  Linear-equations -> SOLUTION: Can someone please explain how to figure this problem? Determine the equation of the line that has a slope of -3 and passes through the point (-3,0). Write the equation in slope in      Log On


   

Question 51247: Can someone please explain how to figure this problem? Determine the equation of the line that has a slope of -3 and passes through the point (-3,0). Write the equation in slope intercept form.
Answer by darq(90) About Me  (Show Source):
You can put this solution on YOUR website!
slope intercept form = y = mx+b

b is y intercept so we need to find the y value when x is 0. substitute the (-3,0) with (x,y) in the slope intercept form.

y = mx+b
0 = m*-3+b
we know that slope is negative 3.
0 = -3*-3+b
0 = 9+b
b= -9

so substitute m and b values with m and b in the slope intercept form.
y=-3x+(-9)
y=-3x-9