9.2SolvingQuadraticEquationsbyGraphingExample1:SolvingaQuadraticEquation:TwoRealSolutionsSolve!" + 2! = 3bygraphing.Example2:SolvingaQuadraticEquation:OneRealSolutionSolve!" − 8! = −16bygraphing.Example3:SolvingaQuadraticEquation:NoRealSolutionsSolve−!" = 2! + 4bygraphing.

Example4:FindingtheZerosofaFunction.Thegraphof, ! = (! − 3)(!" − ! − 2)isshownbelow.Findthezerosofthefunction.Example5:ApproximatingtheZerosofaFunctionThegraphof, ! = !" + 4! + 1isshown.Approximatethezerosofftothenearesttenth.Example6:Real-LifeApplicationsAfootballplayerkicksafootball2ftabovethegroundwithaninitialverticalvelocityof75ftpersecond.Thefunctionℎ = −160" + 750 + 2representstheheighth(infeet)ofthefootballaftertseconds.

a) Findtheheightofthefootballeachsecondafteritiskicked

b) Usetheresultsofpart(a)toestimatewhentheheightofthefootballis50ft.

Homework:5-8,13-23odd,28,37-45odd,53