we will select each options and find zeros (a)[tex] g(x)=x^2-4x-21 [/tex]for finding x-intercept , we can set g(x)=0and then we can solve for x[tex] g(x)=x^2-4x-21=0 [/tex]now, we can factor i…
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All quadratic functions with real coefficients can be graphed on a standard x-y graph. Not all quadratic functions have real roots, maybe that's what you were thinking of?
They open up and will be symmetrical across the y-axis.
The graph (on Cartesian coordinates) of a quadratic equation is a parabola.
Equations are not linear when they are quadratic equations which are graphed in the form of a parabola
A linear function is a function, or equation, that when graphed, will form a straight line.