數學F.4+F.5的問題

1.Find the equation of the straight line which passes through two given points (-2,3) and (1,-4)

2.Find the slope,X-intercept,Y-intercept of the straight line x+4y-7=0

3.Find the equation of the straight line l which passes through P(4,5) and is parallel to L:3x+2y-8=0

4.Find the equation of the straight line that passes trough the point (3,-4) and is perpendicular to the line 2x-y+5=0

5.Find the equation of the straight line which pass through the point (0.5,-3) and has slope 0.5

6. 例如α+β(即係sum of root啦)等於一個數,根住題目要你張α+β轉成α-β,without sloving the equation,敢應該點轉

7.two dice are tossed at the same time.

a) given that the two number shown up are equal,find the probability that the sum of the number is greater than 8.
b) given that the sum of the two number shown up is greater than 8,find the probability that the number are equal.