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Sagot :
If the coordinates of point A are (-3, 2) and the coordinates of point B are (7, 6), the x-intercept of Line CD is
( 3,0), (18/5,0), (9,0), or (42/2, 0),
Point (-52, 141), (-20, 57), (30, -71), or (54, -128) lies on Line CD.
m AB = 2 / 5
C = (2, 4)
m CD = -5 / 2
Equation of line passing though C and D
y = (-5/2)x + b
4 = (-5/2)(2) + b
4 = -5 + b
9 = b
y = (-5/2)x + 9
For the x-intercept y = 0
∴ y = (-5/2)x + 9
0 = (-5/2)x + 9
5/2 x = 9
x = 2/5 × 9
= 18/5
x-intercept = (18/5, 0)
( 3,0), (18/5,0), (9,0), or (42/2, 0),
Point (-52, 141), (-20, 57), (30, -71), or (54, -128) lies on Line CD.
m AB = 2 / 5
C = (2, 4)
m CD = -5 / 2
Equation of line passing though C and D
y = (-5/2)x + b
4 = (-5/2)(2) + b
4 = -5 + b
9 = b
y = (-5/2)x + 9
For the x-intercept y = 0
∴ y = (-5/2)x + 9
0 = (-5/2)x + 9
5/2 x = 9
x = 2/5 × 9
= 18/5
x-intercept = (18/5, 0)
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