Question

Need help. How do I do this

Answer 1

9514 1404 393

Answer:

b

Explanation:

Use the distance formula with the two points Q and P, then simplify and match the pattern of the answer.

`d=√((x_2-x_1)^2+(y_2-y_1)^2)\\\\d=√((b-0)^2+(-c-(-a))^2)\\\\\boxed{d=√(b^2+(-c+a)^2)}`

The value b goes in the green box.