- #1
liuhongwei
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- TL;DR Summary
- about function
My classmates and I have a big dispute on this question. I think only the first one is right, and they think the third one and the fourth one are right. Please help us to analyze it.
Thank you.
The original title is as follows :
Which of the following expressions represents y as a function of x?
①2y + x = 3; ②y = x + 2z; ③y = 2; ④y = kx + 1(k is a constant); ⑤y²= x
Thank you.
The original title is as follows :
Which of the following expressions represents y as a function of x?
①2y + x = 3; ②y = x + 2z; ③y = 2; ④y = kx + 1(k is a constant); ⑤y²= x