{"id":6881,"date":"2021-10-21T21:55:32","date_gmt":"2021-10-21T16:25:32","guid":{"rendered":"https:\/\/mathemerize.com\/?p=6881"},"modified":"2021-10-25T09:51:35","modified_gmt":"2021-10-25T04:21:35","slug":"find-the-equation-of-lines-which-passes-through-the-point-34-and-the-sum-of-intercepts-on-the-axes-is-14","status":"publish","type":"post","link":"https:\/\/mathemerize.com\/find-the-equation-of-lines-which-passes-through-the-point-34-and-the-sum-of-intercepts-on-the-axes-is-14\/","title":{"rendered":"Find the equation of lines which passes through the point (3,4) and the sum of intercepts on the axes is 14."},"content":{"rendered":"
Let the equation of line be \\(x\\over a\\) + \\(y\\over b\\) = 1\u00a0 …..(i)<\/p>\n
This line passes through (3,4), therefore \\(3\\over a\\) + \\(4\\over b\\) = 1\u00a0 …….(ii)<\/p>\n
It is given that a + b = 14\u00a0 \\(\\implies\\)\u00a0 b = 14 – a in (ii), we get<\/p>\n
\\(3\\over a\\) + \\(4\\over 14 – a\\) = 1\u00a0 \\(\\implies\\)\u00a0 \\(a^2\\) – 13a + 42 = 0<\/p>\n
\\(\\implies\\)\u00a0 (a – 7)(a – 6) = 0\u00a0 \\(\\implies\\)\u00a0 a = 7, 6<\/p>\n
for a = 7, b = 14 – 7 = 7 and for a = 6, b = 14 – 6 = 8<\/p>\n
Putting the values of a and b in (i), we get the equations of lines<\/p>\n
\\(x\\over 7\\) + \\(y\\over 7\\) = 1\u00a0 and\u00a0 \\(x\\over 6\\) + \\(y\\over 8\\) = 1<\/p>\n
If the straight line 3x + 4y + 5 \u2013 k(x + y + 3) = 0 is parallel to y-axis, then the value of k is<\/a><\/p>\n If the line 2x + y = k passes through the point which divides the line segment joining the points (1,1) and (2,4) in the ratio 3:2, then k is equal to<\/a><\/p>\n If x + 4y \u2013 5 = 0 and 4x + ky + 7 = 0 are two perpendicular lines then k is<\/a><\/p>\n The slope of tangent parallel to the chord joining the points (2, -3) and (3, 4) is<\/a><\/p>\n