[填空题]
The equation of a linqnu/v o h nmbna* *ch+(m3e/7pb/hh* )*hgv6aakv5 h he is 2x+3y=−5.
1.Find the gradient of .
A second line, , is perpendicular to . =
2.Find the gradient of .
The point P(4,0)(4,0) lies on . =
3.Find the equation of , giving your answer in the form ax+by+d=0, where a,b,d∈Z. a = b = d =
The point Q is the intersection of and .
4.Find the coordinates of (a,b) a= b=