PEMDAS
2.5x + 0.1x = 2.6x
2.6x - 0.01x = 2.59x
By minusing 12 to both sides
d+12=2
-12=-12
d =-10
The answer would be 2/5 because you have to put in a slope equation which gives you your answer.
The correct answer is C.
Perpendicular lines have opposite reciprocal slopes. This mean you will flip the original number upside down, and change its sign (negative to positive and vice versa). So, the opposite of -1/4 will be 4.
