Luiza

Luiza delivers newspapers in her neighborhood. If you plot the points (-1, 1), (4, 1), (4, -2) and (-1, -2), you will create a representation of the route she takes, in miles. How many miles does her route cover?

Correct answer:

x =  13

Step-by-step explanation:

A=(−1,1) B=(4,1) C=(4,−2) D=(−1,−2)  d1=dist(B,A)=(Bx−Ax)2+(By−Ay)2=(4−(−1))2+(1−1)2=5 d2=dist(C,B)=(Cx−Bx)2+(Cy−By)2=(4−4)2+((−2)−1)2=3 d3=dist(D,C)=(Dx−Cx)2+(Dy−Cy)2=((−1)−4)2+((−2)−(−2))2=5  x=d1+d2+d3=5+3+5=13

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