The functions y=3(x+2)2−4 and y=−3(x+2)2−4 are graphed in the xy-plane. Which of the following must be true of the graphs of the vertexes and axes of symmetry of the two functions?Choose 1 answer:(A) The functions will have different vertexes.(B) The functions will have different axes of symmetry.(C) The function y=3(x+2)2−4 will have a minimum value, and the function y=−3(x+2)2−4 will have a maximum value.(D) The function y=3(x+2)2−4 will have a maximum value, and the graph of y=−3(x+2)2−4 will have a minimum value.
Q. The functions y=3(x+2)2−4 and y=−3(x+2)2−4 are graphed in the xy-plane. Which of the following must be true of the graphs of the vertexes and axes of symmetry of the two functions?Choose 1 answer:(A) The functions will have different vertexes.(B) The functions will have different axes of symmetry.(C) The function y=3(x+2)2−4 will have a minimum value, and the function y=−3(x+2)2−4 will have a maximum value.(D) The function y=3(x+2)2−4 will have a maximum value, and the graph of y=−3(x+2)2−4 will have a minimum value.
Identify Form: Identify the form of the given functions.Both functions are in the form of a transformed quadratic function y=a(x−h)2+k, where (h,k) is the vertex of the parabola and x=h is the axis of symmetry.
Determine Vertex: Determine the vertex of each function.For y=3(x+2)2−4, the vertex is (−2,−4).For y=−3(x+2)2−4, the vertex is also (−2,−4).Since both functions have the same h and k values in their vertex form, they share the same vertex.
Axis of Symmetry: Determine the axis of symmetry for each function.The axis of symmetry for both functions is x=−2, as it is derived from the h value in the vertex (h,k).
Parabola Direction: Determine the direction of the parabolas.The coefficient of the squared term a determines the direction of the parabola. If a is positive, the parabola opens upwards. If a is negative, the parabola opens downwards.For y=3(x+2)2−4, a is positive, so the parabola opens upwards and has a minimum value.For y=−3(x+2)2−4, a is negative, so the parabola opens downwards and has a maximum value.