I believe X equals -10.
Diagram shows a framework consisting of 16 wooden rods. The length of each rod is 8 cm.
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For direct variation, variation constant = 2.
For inverse square variation, variation constant = 4.
For inverse variation, variation constant =80.
For inverse variation, variation constant = 9.
For direct square variation, variation constant = 0.6
For direct variation, variation constant = -0.84
(a) Direct variation: y = Kx where x = 3 and y = 6
Variation constant(k) = y/x = 6/3 =2
(b) Inverse square variation: y = K/ where x = -2 and y = 1
Variation constant(k) = y = 1(-2)(-2) =4
(c) Inverse variation: y = K/x where x = 8 and y = 10
Variation constant(k) = y*x = 8*10 =80
(d) Inverse variation: y = K/x where x = 3 and y = 3
Variation constant(k) = y*x = 3*3 =9
(e) Direct square variation: y = K where x = 5 and y = 15
Variation constant(k) = y/ = 15/25 =0.6
(f) Direct variation: y = Kx where x = -7.5 and y = 6.3
Variation constant(k) = y/x = -6.3/7.5 = -0.84
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