This looks like an ellipse.
Complete the square for y: 9(y²-6y-7)=9(y²-6y+9-9-7)=9((y-3)²-16).
Rewrite the equation:
4x²+9(y-3)²-144=0; 4x²/144+9(y-3)²/144=1; x²/36+(y-3)²/16=1.
Standard equation of an ellipse is (x-h)²/a²+(y-k)²/b²=1, where (h,k) is the origin or centre.
This is the equation of an ellipse with centre (0,3), a=6 and b=4 (semimajor and semiminor axes).
(-2,-3)
Mirror the point across the x-axis. If it is at (-2,3) then the reflection would be (-2, -3)
Answer:
6
Step-by-step explanation:
Difference between n and 3 is 3-n
Multiplied by -6: -6(3-n)
-6(3-n) = 18
3-n = -3
n = 3+3 = 6
The practical rule would be, times that number, by the result of the first time you multiplied the first number. But, it would all depend by how much your're raising the number by.
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