A. 1. Which of the following represents a function?a. A= {(2, -3), (1, 0), (0, 0), (-1, -1)}b. B= {(a, b)|b = e"}c. C= {(x, y)) y = 2x + 1}d. D= {(a, b)|b = v1-a?;e. E= {(x, y)ly = (x -1)² + 2}f. F= {(x, y))x = (y+1)' – 2}= {(x, y))x² + y² = 1}h. H= {(x, y))x sy}i. I= {(x, y)| |x| + ly = 1}%3D%3Dj. J= {(x, y))x is positive integer and x =1+7}y-3

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A. 1. Which of the following represents a function? a. A = {(2, -3), (1, 0), (0, 0), (-1, -1)} b. B= {(a, b)b =e"} c. C= {(x, y) y = 2x + 1} d. D= {(a, b)b = v1-a? e. E= {(x, y)ly (x-1) + 2} f. F= {(x, y))x=(y+1)'- 2} g. G= (x, y))x? + y? = 1} h. H= {(x, y)x sy} i. I- {(x, y) |x| + ly = 1} %3D %3D V1-a } %3D %3! %3D %3D j. J= {(x, y)x is positive integer and x = 1 +7}