Which sets of ordered pairs represent relations that are functions? You may choose more than one correct answer. ((1.0), (2.0), (3, 0). (4,0)]
(2, 3), (2, 4), (2,5), (2. 6))
[(1, 1), (2, 2), (3, 3), (4,4)}
[(1,3), (-1, 4), (1.4), (-1,3)}
[(6-6). (-6, 6), (5,-5), (-5,5)}

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

the final price would be 29.6925

step-by-step explanation:

39.59 minus 25% equals 29.6925

5050

hope this !