Without changing any x coordinates,all of the y coordinates are transformed to their opposite numbers (or additive inverses) and then are rescaled by a factor of 4.In terms of graph,the graph of y= -4...好長哦~如果考試的話要全寫嗎，后面那段話什么意思flipping翻轉y=f(x)和vertically stretching垂直拉伸至4倍這是什么意思第一句可以不寫。比較兩個函數(shù)的圖像，就是要說明y=-4f(x)是怎么從y=f(x)的圖像變化來的，這樣就清楚的對比了兩個圖像的關系。翻轉y=f(x)其實是以x軸為對稱軸做的上下翻轉。垂直拉伸就是將所有的y值統(tǒng)一增大到原來的4倍。