The graph of y=x2 - 6x + 8 is shown. The roots of the equation x2 - 6x + 8 =0

Answer 1

The roots of a quadratic equation are the values for X when Y is equal to zero. On a graph, that is where the curve crosses the X-axis.If you have the graph, then you You should find that the curve will cross the x-axis when X is equal to 2 and when X is equal to four.

You can also solve this by factoring the equation X^2 - 6X + 8 = 0, giving (X-4) (X-2) = 0. The roots are where one of the factored terms equals zero, so the roots are 4 and 2.

Answer 2

To find the roots from a graph, look for the x intercepts, where the graph crosses the x axis. For this problem, the roots are:

x=2,4