Perimeter of a triangle = sum of measures of each side ;
Rearrange equation to get
6x>12 so
x>2
I think you meant to type
4(n)-5=7.
4n = 7 + 5
4n = 12
n = 12/4
n = 3
B. if two lines are perpendicular, then they intersect to form four right angles.
There’s no slope through (5,-4)