Idont understand how to do this..

the point (–3, 5) has been reflected so that the image is at (5, –3). what is the line of reflection?

a.
x-axis
b.
y-axis
c.
y = x
d.
y = –x

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?