The expression 3(x-9) is equivalent to 03(x)+9.
O 3(x)+3(9).
o 3(x) – 9.
3(x) – 3(9).

3(x)-3(9)

Step-by-step explanation:

The brackets means you times everything within the brackets with everything outside it. So it would be 3 times x take away 3 times 9

i’m here for points.

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