variation and matrices

P varies directly as the cube root of Q. Find the relation between P and Q.

It is given that S varies directly as T and inversely as the square root of U. Find the relation between S, T and U.

y varies directly as x and inversely as the square of z. Given that the constant is k,find the relation between x, y and z.

• True

• False

The value of y varies directly with x.  Which function represents the relationship between x and y if y = 14 when x = 6. 

• y=20x
• y=84x
• y=7/3x
• y=3/7x

Given that y varies inversely with x, if x =7 and y = 4, what is y when x = 2?

• 14
• 10
• 2
• -14

If f varies directly as g and inversely as the square of h, and f = 20 when g = 50 and h = 5, find f when g = 18 and h = 6.

• 4

• 5

• 8

• 10

• -5

• 2

• -8

• 7

What do m, n, p and q equal in this scalar matrix multiplication?

• m=8, n=9, p=-4, q=4 
• m=15, n = -45, p=20, q=-5
• m=20, n=-5, p=15, q=-45
• m=-5, n=20, p=-45, q=15

Add these matrices.

Tambahkan dua matriks ini.

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