Q. Solve the system of equations.y=x2−2x−2y=−3x+18Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Set Equations Equal: Set the two equations equal to each other since they both equal y.x2−2x−2=−3x+18
Move Terms, Set to Zero: Move all terms to one side to set the equation to zero.x2−2x+3x−2−18=0x2+x−20=0
Factor Quadratic Equation: Factor the quadratic equation. (x+5)(x−4)=0
Solve for x: Set each factor equal to zero and solve for x.x+5=0 or x−4=0x=−5 or x=4
Substitute x, Find y: Substitute x=−5 into the second equation to find y.y=−3(−5)+18y=15+18y=33
Write Coordinates: Substitute x=4 into the second equation to find y.y=−3(4)+18y=−12+18$y = \(6\)
Write Coordinates: Substitute \(x = 4\) into the second equation to find \(y\).\(y = -3(4) + 18\)\(y = -12 + 18\)\(y = 6\)Write the coordinates in exact form.First Coordinate: \((-5, 33)\)Second Coordinate: \((4, 6)\)
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