Answer:
Step-by-step explanation:
<u>Given equation:</u>
- x² + y² + 8x - 4y - 7 = 0
<u>Convert this to standard form by completing the square:</u>
- (x - h)² + (y - k)² = r², where (h, k) - center, r - radius
- x² + 2*4x + 4² + y² - 2*2y + 2² - 16 - 4 - 7 = 0
- (x + 4)² + (y - 2)² - 27 = 0
- (x + 4)² + (y - 2)² = 27
- (x + 4)² + (y - 2)² = (√27)²
The center is (- 4, 2) and the radius is √27
Answer:
Step-by-step explanation:
Dont ask here i know ur cheating
<h3>
Answer: y = -x + 6</h3>
To get this answer, you subtract x from both sides to go from x+y = 6 to y = 6-x which rearranges to y = -x+6
Note that y = -x+6 is the same as y = -1x+6
We can compare this to y = mx+b form to see that m = -1 is the slope and b = 6 is the y intercept.
Answer:
<em>d</em>= 4/7 or 0.571428
The answer 16 will be what you are looking for.
