直线 与直线 的交点坐标为：
Answer and explanation
Correct answer: C.
其他选项为什么不对： 代入检验，、、都与上面算出的 不符。
- Step 1: 两式相加得 ，所以 。
- Step 2: 代入 得 ，交点为 。
Answer
.
Practise more 函数与基本初等函数.
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Correct answer: C.
Free questions with an explanation for every one, and full timed Gaokao mock tests.