Maths F. 4 Q 40 分!快－gbu94mz95e的部落格

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Maths F. 4 Q 40 分!快

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Q. 1 Given L: 3x-5y+15=0 A) Find the slope of L.B) Find theequation of line L1 that passes (2, -4) and perpendicular to L.C) Another line L2 also passes (2, -4) make equal intercepts on the axes, find the equation of L2.Q. 2 If simultaneous equations: x2+y2-2y-4=0 and y=2x+k has... 顯示更多 Q. 1 Given L: 3x-5y+15=0 A) Find the slope of L.B) Find theequation of line L1 that passes (2, -4) and perpendicular to L.C) Another line L2 also passes (2, -4) make equal intercepts on the axes, find the equation of L2.Q. 2 If simultaneous equations: x2+y2-2y-4=0 and y=2x+k has only one solution, find k. 更新: B) Find the equation of line L1 that passes (2, -4) and perpendicular to L. C) Another line L2 also passes (2, -4) make equal intercepts on the axes, find the equation of L2. Q. 2 If simultaneous equations: x2+y2-2y-4=0 and y=2x+k has only one solu

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Q1 A slope = -a/b B -1/slope = (y-(-4))/(x-2) C find interception pts of L , then use (y-b1)/(x-a1)= (b2-b1)/(a2-a1) Q2 substitute equ 2 into 1 , find the form ax^2+bx+c=0, set b^2-4ac=0 then find k

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