One way to test if a graph is a function or not is by doing a <u>vertical line test</u>.
<em>The </em><u><em>vertical line test</em></u><em> is tested by testing if any vertical line is drawn would intersect the curve more than once. If there is any such line, the graph does not represent a function, if there isn't any such line, the graph is a function.</em>
Hope that helps!
I know bts but I’m not a really fan wbu?
M=25 times 40. this is filler so I can submit
1: 21
2: 4a
3: m^2
4:4x+4
5:7d+21
6:y(y+3)
7:x+1
8:d+4
9:y+3
seems u got answers for the rest so i will not answer them
