Mw 3 x 3 34 3 15 guided practice for examples 1 and 2

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MW = 3x + 3 = 3(4) +3 = 15
GUIDED PRACTICEfor Examples 1 and 2In Exercises 1and 2, identify the segment bisectorof PQ . Then find PQ.1.343ANSWERMN;
GUIDED PRACTICEfor Examples 1 and 22.In Exercises 1and 2, identify the segment bisectorof PQ . Then find PQ.line l; 11 57ANSWER
EXAMPLE 3Use the Midpoint Formulaa.FIND MIDPOINT The endpoints ofRSare R(1,–3)and S(4, 2).Find the coordinates of the midpoint M.
EXAMPLE 3Use the Midpoint Formula4M2ANSWERSOLUTION
EXAMPLE 3Use the Midpoint Formulab.FIND ENDPOINT The midpoint of JKis M(2, 1).One endpoint is J(1, 4).Find the coordinates of endpoint K.
EXAMPLE 3Use the Midpoint FormulaFIND ENDPOINTLet (x, y)be the coordinates of endpoint K.Use the Midpoint Formula.STEP1Find x.1+ x22=1 + x = 4x =3STEP2Find y.4+ y12=4 + y = 2y =2The coordinates of endpoint Kare (3, – 2).ANSWERSOLUTION
GUIDED PRACTICEfor Example 33.The endpoints of ABare A(1, 2) andB(7, 8). the coordinates of the midpoint MFind .
4.The midpoint of VWis M(– 1, – 2).One endpoint is W(4, 4).Find the coordinates of endpoint V.
SOLUTIONEXAMPLE 4Standardized Test PracticeUse the Distance Formula. You may find it helpful to draw a diagram.
EXAMPLE 4Standardized Test PracticeDistance FormulaSubstitute.Subtract.Evaluate powers.Add.Use a calculator to approximate the square root.(x x ) + (y y )2 2 2 2 11 RS=[(4 2)] + [(–1) –3] 22=(2) + (–4 )22=4+16=20=The correct answer is C.ANSWER4.47~=
GUIDED PRACTICEfor Example 46.What is the approximate length of AB, with endpoints A(–3, 2) and B(1, –4)?6.1 units7.2 units8.5 units10.0 unitsBANSWER

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