The diagram shows a semicircle with centre O
and radius
2
and a semicircular arc with diameter
P
R
.

Angle
P
O
R
is a right angle.

What is the area of the shaded region?

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?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

What is the slope of the line that contains the points (-5, 6) and (14. - 7)?