Answer:
2? i've never learned this but i just tried to teach myself lol sorry if its wrong i tried
Step-by-step explanation:
For functions, x’s can’t repeat, so looking at the first problem, C is the only one where the first number in each coordinate (x,y) doesn’t repeat.
For the second, x = -2 means that no x is always -2 matter which y you would look at. So x’s repeat and it forms a vertical line. So it is not a function
Altogether that's $120 dollars so that's how much u need
TRY PHOTOMATH it’ll help u with questions like this , all u do is take a pic and it’ll show u the answer and how to do it
