一、境空题（每空3分，共45分）：1．若点P关于x轴的对称点是（－4，－3），则点P关于y轴的对称点是，关于原点的对称点是；2若正三角形两个顶点的坐标是A（0，1）、B（0，5），则第三个顶点C的坐标是；3．若函数是一次函数，且y随x的增大而增大,则m《．在函数＊一二一下十／Y First, the environmental questions (3 points for each space, a total of 45 points): 1. If point P has a symmetrical point about the x-axis (-4,-3), the point of symmetry of point P with respect to the y-axis is that the point of symmetry about the origin is; 2 if the coordinates of the two vertices of the regular triangle are A (0, 1), B (0,5), then the coordinates of the third vertex C is; 3. If the function is a linear function, and y increases with the increase of x, then m ". The function * one two ten/y