Tell whether each function is quadratic. Explain.
1. y + 2x^2 = 3x
2. x^2+y=4+x^2
3. {(2,12), (-1,3), (0,0), (1,3)}

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation:

step-by-step explanation:

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