英语数学题.请写一下题意和解题过程哈.有加分哈.

英语数学题.请写一下题意和解题过程哈.有加分哈.
注：" 1.the equation of a straight line, L, is 6x-2y+1=0.
a).the straight lineP is parallel toLand passes through theorigin
write down the equation ofP.
2.give thatA is (1,6),B is(9,2) C is(9,0)and D is(1,4)(本来有给一个图.大家自己画一下哈.）
a).the parallelogram is reflected in the line y=2.find the coordinates of the image of the point D
b).find the coordinates of the point about which ABCD has rotational symmetry of order 2
3.the co-ordinates of the points A,B snd C are (-7,1), (3,6) and (0,2) respectively
a), given that B is the the mid-point of the line AX, find the co-ordinates of X.
4.give that three points A(-2,7),B(-2,2)and C(6,-4)
a).find the value of sin