Is the line through points p(–5, 10) and q(–9, 2) perpendicular to the line through points r(4, 6) and s(–4, 10)? explain. a. yes; their slopes have product –1. b. no; their slopes are not equal. c. no, their slopes are not opposite reciprocals. d. yes; their slopes are equal.

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.