Answer:
The slope of red line is [tex]-\dfrac{1}{2}[/tex]
B is correct.
Step-by-step explanation:
Two lines are parallel. Two lines shown by color green and red line.
As we know if lines are parallel then their slope is equal.
W are given green line is parallel to red line.
The slope of green line is [tex]-\dfrac{1}{2}[/tex]
But The slope of red line = slope of green line.
Slope of red line [tex]=-\dfrac{1}{2}[/tex]
Hence, The slope of red line is [tex]-\dfrac{1}{2}[/tex]
