Answer: 
Step-by-step explanation:
Given



from the figure, we can write

From the data shown in the scater plots, the points are scattered apart which means that r is not close to 1.
Also the data points increase to the right which means that r is positive.
Therefore, the estimate for r in the data shown in the scatter plot is 0.55
Answer:
The third option
Step-by-step explanation:
Step-by-step explanation:
d = √(x2-x1)²+(y2-y1)²
d = √(-3-(-3))²+(-7-(-5))²
d = √ 0+(-2)²
d = √4
d = 2 units