x/kg |
0 |
1 |
2 |
3 |
? |
y/cm |
14.5 |
15 |
15.5 |
16 |
? |
⑴畫出△ABC關(guān)于x軸對(duì)稱的△A1B1C1 , 并寫出△A1B1C1各頂點(diǎn)的坐標(biāo);
⑵在y軸上找一點(diǎn)P , 使PA+PB1最短,畫出圖形并寫出P點(diǎn)的坐標(biāo).