B because if you multiply .15 and .45 by 100 you get 15% and 45%. 45% is much higher than 15%
29
-10
------
19
*3
--------
57 divided by 3 = 19
19
-10
------
9 + 2 = 11
11 - 7 = 4
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Try this solution:
1. if to transform the given equation into the standard form:
x²+y²-4x+6y-3=0;
(x²-4x+4)+(y²+6y+9)-16=0;
(x-2)²+(y+3)²=4²
2. Using the standard form it is possible to find the coordinates of the centre of given circle: x=2; y= -3
answer: b) - (2;-3)
When y increases, x increases ⇒ Direct
y = kx
when y = 9, x =3
9 = k(3)
9 = 3k
k = 3
therefore y = 3x
