y = x - 3 is a linear function where for each x-value we find one and only one y-value.
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IMPOSSIBLE
If: x3+1 = 65 Then: x3 = 65-1 And: x3 = 64 So: x = 4 by means of the cube root function on the calculator
y = x2 is an (approximately) U shaped graph that is entirely above the x axis and is symmetric about the y axis. y = x3 is asymptotically negatively infinite when x is negatively infinite and positively infinite when x is positively infinite. It is symmetric about the line x+y=0.
no
Y=X^2 is a function for it forms a parabola on a graph.