Question 384335
 y=x^2+2x-3
the easiest way is to use a table of values.  you can pick a few numbers for x, plug them in and solve for y.
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for example, if x = 1, y=1^2 + 2(1)- 3 = 0, so one point is (1, 0)
pick othe values for x such as 0, -1, -3, -4, 1, 3, 5.
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plug each number in (one at a time) and solve for y.  this will give you a lot of points.  plot the points on a graph and connect the dots.  the graph should look like this:

{{{ graph( 300, 200, -6, 5, -10, 10, x^2+2x-3) }}}