Risk factors and causes. The retina is the layer of tissue that lines the inside of the eye. It is light sensitive and its function is to send visual signals to the brain, through the optic nerve. Eye trauma can cause a detached retina. Retinal detachment happens when this layer is pulled from its normal position.
Completing the Square: Finding the Vertex (page 1 of 2) The vertex form of a quadratic is given by. y = a(x â h)2 + k, where (h, k) is the vertex. The a in the vertex form is the same a as. in y = ax2 + bx + c (that is, both a's have exactly the same value). The sign on a tells you whether the quadratic opens up or opens down.
To do this choose any other point on the parabola and plug in for x and y. I am going to choose the point (1,0) for this example which mean I will plug 1 in for x and 0 in for y. Now that we know a we can plug everything into vertex form. Final Answer for vertex form! Now letâs find factored form! The terms and are the x values of the root, so we must identify the roots. Looking at the graph we can see the roots (or x-intercepts) are the points (1,0) and (3,0).