7.
如图,在平面直角坐标系中,直线y=-2x+4与x轴、y轴分别相交于点A,B,四边形ABCD是正方形,曲线y=$\frac{k}{x}$在第一象限经过点D.将正方形ABCD沿x轴向左平移( )个单位长度时,点C的对应点恰好落在曲线上.
| A. | $\frac{1}{2}$ | B. | 1 | C. | $\frac{3}{2}$ | D. | 2 |
4.一次函数y=3(x-1)在y轴上的截距是( )
0 286036 286044 286050 286054 286060 286062 286066 286072 286074 286080 286086 286090 286092 286096 286102 286104 286110 286114 286116 286120 286122 286126 286128 286130 286131 286132 286134 286135 286136 286138 286140 286144 286146 286150 286152 286156 286162 286164 286170 286174 286176 286180 286186 286192 286194 286200 286204 286206 286212 286216 286222 286230 366461
| A. | 1 | B. | -1 | C. | 3 | D. | -3 |