Its about finding the equation of a circle from its general form equation:
x^2 + y^2 + 8x - 4y - 61 = 0
x^2 + 8x + 16 + y^2 - 4y + 4 = 61 + 16 + 4
(x + 4)^2 + (y - 2)^2 = 81
therefore the center is C(-4, 2), and the radius is 9
The second answer since f goes inside g which gives u 5x^2
Answer:
Slope, after x stays the same so in this case it would be 2x+b
Step-by-step explanation
To find b, just substitute the x and y values for the ones given. Ex.
6= 2(-3)+b
Then solve for b.
Answer:
y=x2−4x+7
or you can do it is way y=(x−2)2+3
Step-by-step explanation:
30/40 passes :)
explanation: 24/30=75%
75% of 40=30