HELP PLEASE I POSTED THIS 2 TIMES

What is the reflection image of (5,-3) across the line y = -x?

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression