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QUESTION IMAGE

directions: graph and label each figure and its image under the given d…

Question

directions: graph and label each figure and its image under the given dilation.

  1. quadrilateral ( abcd ) with vertices ( a(-4,1) ), ( b(-2,3) ), ( c(0,-2) ), and ( d(-5,-2) ); ( k = 3 )
  2. triangle ( lmn ) with vertices ( l(2,-8) ), ( m(12,8) ), and ( n(14,-4) ); ( k = 1/2 )
  3. rectangle ( pqrs ) with vertices ( p(5,15) ), ( q(15,15) ), ( r(15,10) ), and ( s(5,10) ); ( k = 4/5 )
  4. rhombus ( wxyz ) with vertices ( w(2,-4) ), ( x(6,-2) ), ( y(10,-4) ), and ( z(6,-6) ); ( k = 3/2 )
  5. square ( mnop ) with vertices ( m(-7,-4) ), ( n(-4,-3) ), ( o(-3,-6) ), and ( p(-6,-7) ); ( k = 2 )
  6. trapezoid ( defg ) with vertices ( d(-5,15) ), ( e(10,10) ), ( f(10,5) ), and ( g(-5,0) ); ( k = 1/ )

Explanation:

Problem 1: Quadrilateral \(ABCD\) with \(A(-4,1)\), \(B(-2,3)\), \(C(0,-2)\), \(D(-5,-2)\), \(k = 3\)

Step 1: Dilate \(A(-4,1)\)

To dilate a point \((x,y)\) by a scale factor \(k\), we use the formula \((kx,ky)\). For \(A(-4,1)\) and \(k = 3\):
\(x'=3\times(-4)= - 12\), \(y'=3\times1 = 3\), so \(A'(-12,3)\)

Step 2: Dilate \(B(-2,3)\)

Using the same formula, \(x'=3\times(-2)=-6\), \(y'=3\times3 = 9\), so \(B'(-6,9)\)

Step 3: Dilate \(C(0,-2)\)

\(x'=3\times0 = 0\), \(y'=3\times(-2)=-6\), so \(C'(0,-6)\)

Step 4: Dilate \(D(-5,-2)\)

\(x'=3\times(-5)=-15\), \(y'=3\times(-2)=-6\), so \(D'(-15,-6)\)

Step 1: Dilate \(L(2,-8)\)

Using \((kx,ky)\) with \(k=\frac{1}{2}\):
\(x'=\frac{1}{2}\times2 = 1\), \(y'=\frac{1}{2}\times(-8)=-4\), so \(L'(1,-4)\)

Step 2: Dilate \(M(12,8)\)

\(x'=\frac{1}{2}\times12 = 6\), \(y'=\frac{1}{2}\times8 = 4\), so \(M'(6,4)\)

Step 3: Dilate \(N(14,-4)\)

\(x'=\frac{1}{2}\times14 = 7\), \(y'=\frac{1}{2}\times(-4)=-2\), so \(N'(7,-2)\)

Step 1: Dilate \(P(5,15)\)

Using \((kx,ky)\) with \(k = \frac{4}{5}\):
\(x'=\frac{4}{5}\times5=4\), \(y'=\frac{4}{5}\times15 = 12\), so \(P'(4,12)\)

Step 2: Dilate \(Q(15,15)\)

\(x'=\frac{4}{5}\times15 = 12\), \(y'=\frac{4}{5}\times15=12\), so \(Q'(12,12)\)

Step 3: Dilate \(R(15,10)\)

\(x'=\frac{4}{5}\times15 = 12\), \(y'=\frac{4}{5}\times10 = 8\), so \(R'(12,8)\)

Step 4: Dilate \(S(5,10)\)

\(x'=\frac{4}{5}\times5 = 4\), \(y'=\frac{4}{5}\times10 = 8\), so \(S'(4,8)\)

Answer:

\(A'(-12, 3)\)
\(B'(-6, 9)\)
\(C'(0, -6)\)
\(D'(-15, -6)\)

Problem 2: Triangle \(LMN\) with \(L(2,-8)\), \(M(12,8)\), \(N(14,-4)\), \(k=\frac{1}{2}\)