Answer:
y = 2x + 6
Step-by-step explanation:
To find the perpendicular equation of this line, you must find the opposite-reciprocal. The opposite slope of -1/2 is 2. Then plug in your x and y terms and you get the equation:
4 = 2(-1) + b
4 = -2 + b
+2 +2
6 = b
So...
y = 2x + 6
Let me know if you need a further explanation.