Which of the sets of ordered pairs represents a function? (1 point) a = {(2, 7), (1, −5), (7, 2), (2, −9)} b = {(5, 3), (−2, −9), (−3, 8), (9, 3)}

its B

Step-by-step explanation:

i was taught to do functions by lining up the xs on one side and the ys on the other(if they repeat only put the number once) then draw lines to the pairs. no x value can have two y values.

1d

2b

3 false

4 d

5 3200sq,ft

80+60+y=180

then divide the difference between 60 and y and add it to 180

so x =180 +( (y-60)/2)

x equals 200

step-by-step explanation:

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