问题
填空题
已知，函数y=3x的图象经过点A（﹣1，y1），点B（﹣2，y2），则y1 y2（填“＞”“＜”或“=”）
答案
＞
题目分析：分别把点A（﹣1，y1），点B（﹣2，y2）代入函数y=3x，求出点y1，y2的值，并比较出其大小即可：
∵点A（﹣1，y1），点B（﹣2，y2）是函数y=3x上的点，
∴y1=﹣3，y2=﹣6。
∵﹣3＞﹣6，∴y1＞y2。
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已知，函数y=3x的图象经过点A（﹣1，y1），点B（﹣2，y2），则y1 y2（填“＞”“＜”或“=”）
＞
题目分析：分别把点A（﹣1，y1），点B（﹣2，y2）代入函数y=3x，求出点y1，y2的值，并比较出其大小即可：
∵点A（﹣1，y1），点B（﹣2，y2）是函数y=3x上的点，
∴y1=﹣3，y2=﹣6。
∵﹣3＞﹣6，∴y1＞y2。
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