Cody is solving the equation 2.475x2+6.42x−5.238=0. He plugs the values from the equation into the quadratic formula.
−6.42 ± (6.42)2− 4(2.475)(−5.238)√2(2.475)
He decides that he is likely to make errors evaluating the quadratic formula, so he uses his graphing calculator instead to graph the equation y=2.475x2+6.42x−5.238.
How can Cody use the graph to find the solutions of the equation 2.475x2+6.42x−5.238=0?
