y=3x(squared)-7 , i have to graph each function!?!?!?!......

this is algebra one math and the teacher doesnt teach very well just with notes!! please help!!

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y=3x2-7 is a parabola with vertex at (0,-7) and y-axis (x=0) as the axis of symmetry.

Note where the parabola intersects the x-axis: 3x2-7=0, 3x2=7, x=±√(7/3), that is, (-1.53,0) and (1.53,0) approx. These points help you to draw the graph: (0,-7), (-1.53,0) and (1.53,0).

by Top Rated User (1.2m points)

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