Which sets represent Functions? Select all that apply. A) (1,b), (5,a), (8,b) B) (1,b), (5,a), (5,c) C) (1,7), (49,7), (52,7)
Ann [662]
Answer:
A, C
Step-by-step explanation:
The lists of first numbers of the ordered pairs in each set are ...
A: 1, 5, 8 . . . . . . unique, this is a function
B: 1, 5, 5. . . . . . .not unique; not a function
C: 1, 49, 52 . . . unique, this is a function
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A function cannot have multiple outputs for the same input. For relation B, the input of 5 gives outputs of 'a' and 'c', so it is not a function.
Yes, you can do it using substitution. However, elimination would be better because you could just add the two equations and have y cancelled out immediately.
Answer:
y = -248
Step-by-step explanation:
Hi there!
Set up a proportion:
Cross-multiply:
I hope this helps!