Answer:
D
Step-by-step explanation:
x²=4
x=√4
X1=2
X2=-2
m=0 (m is the slope)
m=y2-y1/x2-x1
m=6-6/1-5
m=0/4
m=0
*Note: If the zero is in the denominator (on the bottom) the slope is undefined (UND).
Answer: i would say probably 3 or -3
I hope it helps