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The graph of g(x)=-(1)/(2)(x+3)^(2)-4 is translated 4 units right. What is the value of h when the equation of the transformed graph is written in vertex form?
(A) -7
(B) 1
(C) -3
(D) 4
(E) -1
(F) 7

The graph of g(x)=12(x+3)24 g(x)=-\frac{1}{2}(x+3)^{2}-4 is translated 44 units right. What is the value of h h when the equation of the transformed graph is written in vertex form?\newline(A) 7 -7 \newline(B) 11\newline(C) 3 -3 \newline(D) 44\newline(E) 1 -1 \newline(F) 7 7

Full solution

Q. The graph of g(x)=12(x+3)24 g(x)=-\frac{1}{2}(x+3)^{2}-4 is translated 44 units right. What is the value of h h when the equation of the transformed graph is written in vertex form?\newline(A) 7 -7 \newline(B) 11\newline(C) 3 -3 \newline(D) 44\newline(E) 1 -1 \newline(F) 7 7
  1. Understand Translation Effect: Understand the effect of translating a graph to the right on the equation.\newlineTranslating a graph horizontally to the right by kk units will result in a change in the xx-component of the vertex form of the equation. The general form of the translation is:\newlineIf g(x)=a(xh)2+kg(x) = a(x - h)^2 + k, then the translated function g(x)=a(x(h+k))2+kg'(x) = a(x - (h + k))^2 + k.\newlineIn this case, we are translating the graph 44 units to the right, so we will subtract 44 from the xx-component of the vertex form.
  2. Apply Translation to Function: Apply the translation to the given function.\newlineThe given function is g(x)=12(x+3)24g(x) = -\frac{1}{2}(x + 3)^2 - 4. To translate this function 44 units to the right, we replace xx with (x4)(x - 4) in the equation.\newlineThe new function will be h(x)=12((x4)+3)24h(x) = -\frac{1}{2}((x - 4) + 3)^2 - 4.
  3. Simplify Translated Equation: Simplify the equation of the translated function.\newlineNow we simplify the equation inside the parentheses:\newlineh(x)=12(x4+3)24h(x) = -\frac{1}{2}(x - 4 + 3)^2 - 4\newlineh(x)=12(x1)24h(x) = -\frac{1}{2}(x - 1)^2 - 4\newlineThis is the vertex form of the translated function, where the vertex is at (h,k)(h, k).
  4. Identify Vertex Value: Identify the value of hh in the vertex form.\newlineFrom the vertex form h(x)=(12)(x1)24h(x) = -(\frac{1}{2})(x - 1)^2 - 4, we can see that the vertex is at (h,k)=(1,4)(h, k) = (1, -4).\newlineTherefore, the value of hh is 11.

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