Is the line through points p(8, 4) and q(0, 0) perpendicular to the line through points r(–7, 9) and s(–11, 17)? explain. yes; their slopes have product –1. no, their slopes are not opposite reciprocals. no; their slopes are not equal. yes; their slopes are equal?

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm