Answer:
They have the same rate of change.
Step-by-step explanation:
They both increase two degrees every hour.
Let us find the slopes of the two lines
ax+by=c, slope m1 = -a/b
bx-ay=c, slope m2 = b/a
m1*m2 = (-a/b)(b/a) = -1
Therefore the two lines are perpendicular so the answer is D
The answer is c i hope this help you out.
