A line has a slope of –3 and a y-intercept of 3. What is the x-intercept of the line? –9 –1 1 9

Thanks!

i hope this is what you were looking for.

see attached graph

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

y/x of point b= y/x of point a

step-by-step explanation:

(i got the same question, this was the correct answer.)