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Identify the vertex first. Then use it to find the axis of symmetry.
Vertex: (3,2)
Axis of Symmetry: x=3
Graph:
We want to draw the graph of the given quadratic function. Note that the function is already written in vertex form, f(x)=a(x-h)^2+k, where a, h, and k are either positive or negative numbers. y=1/2(x-3)^2+2 To draw the graph, we will follow four steps.
Let's get started.
We will first identify the constants a, h, and k. Recall that if a< 0, the parabola will open downwards. Conversely, if a> 0, the parabola will open upwards. Vertex Form:& f(x)= a(x- h)^2+ k Function:& y= 1/2(x- 3)^2+ 2 We can see that a= 12, h= 3, and k= 2. Since a is greater than 0, the parabola will open upwards.
Let's now plot the vertex ( h, k) and draw the axis of symmetry x= h. Since we already know the values of h and k, we know that the vertex is ( 3, 2). Therefore, the axis of symmetry is the vertical line x= 3.
Note that both points have the same y-coordinate.
Finally, we will sketch the parabola which passes through the three points. Remember not to use a straightedge for this!