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...Math lecture august pre calculus review problems solutions algebra and geometry problem give equations for the following lines in both point slope intercept form a line which passes through having b points c parallel to y x with d perpendicular origin solution is solving yields first we compute using familiar rise over run formula m rst of our desired since must have same it be negative reciprocal any find intersection if there one between passing write satisfy assuming as such that thus nd can plug into either original get unique has expressed by equation but this distinct from so they cannot all real roots polynomials factor irreducible e f note polynomial factored non constant coecients factors irreducibles shows its are use quadratic p two follows no further polyno mial degree or only easy see root out an long division r let z then solve presence means last these positive meansthatanysolution third redundant suces look...