For the following functions (a) tell whether the graph opens up or opens down, (b) find the vertex, and (c) find the axis of symmetry. 5. y=x²+1 6. y=-x²- 4 7. y=x22r 8. y=x²+ 2r+ 1 9. y=3x2 - 6x+4 10. y =-22+5x-3

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