Exercise 8.2 |National Book Foundation| Grade 9| Model Textbook Of Mathematics| Federal Board| Mathematisry
0:00 Formulas
1:46 Question 1 Find equation of horizontal line passing through (2,3),(8,0),(-5,-9),(-3/2,-5/2).
5:58 Question 2 Find equation of vertical line passing through (1,5),(9,6),(-4,-7),(1/4,3/4).
11:58 Question 3 i) Find equation of line with following information Slope=2 and y-intercept =-3
14:41 Question 3 ii) through (-5,7) with slope 4
16:07 Question 3 iii) through (4,-5) with slope 0
16:73 Question 3 iv) through (-2,9) with undefined slope.
17:40 Question 3 v) through (-6,1) and (2,-4).
21:11 Question 3 vi) through (2,-4) and (8,4).
24:13 Question 3 vii) x-intercept =-6 and y-intercept = 5
27:36 Question 3 viii) slope=-1 and x-intercept=11
28:50 Question 4 i) Find equation of line in symmetric form when (-4,2) and tan theta=3/4.
33:09 Question 4 ii) Find line of equation in symmetric form when (6,-6) and theta= 30°
33:49 Question 5 i) Find equation of line in Normal form when P=5 and theta =120°
36:11 Question 5 ii) Find equation of line in Normal form when P=10 and than theta=1.
39:56 Question 6 i) Find equation of straight line through (-4,-4) and parallel to line with slope -5.
41:04 Question 6 ii) Find equation of straight line through (5,-1) and perpendicular to line with slope 1/4.
42:27 Question 6 iii) Find equation of straight line having y-intercept=4 and parallel to with slope 1/2.
43:39 Question 6 iv) Find equation of straight line having x-intercept=-2 and perpendicular to line with slope 4.
46:39 Question 6 v) Find equation of straight line through (-1,4) and perpendicular to line passing through (3,0) and (1,-2).
49:04 Question 6 vi) Find equation of straight line through (6,-4) and parallel to line passing through (-5,2) and (3,6).
51:48 Question 7 Find equation of line through (3,7) and parallel to line 4x-3y+1=0.
54:23 Question 8 Find equation of line through (-2,-1) and perpendicular to line x-2y=0.
56:25 Question 9 Find equation of perpendicular bisector of line segment joining (0,6) and (2,-2).
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