Triangle END is reflected across the line y = x using the rule (x, y) - (,x) to create triangle E'N'D'. If a line segment is drawn from point E to point E', which statement would best describe the line segment drawn in relation to the line y = x?
Both are congruent to each other.
Both create diameters of concentric circles.
They are parallel.
They are perpendicular

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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?

Ithink i know it but i want to be sure so can you me out ?