Answer:
Step-by-step explanation:
x = (-b ± √ (b² - 4ac) )/2a.
10
d = √(x2 -x1)² + (y2 - y1)²
√(-6 - 0)² + [1 - (-7)]²
√(-6)² + (8)²
√(36) + (64)
√100
= 10