The transformation that takes a point (a, b) to the point (-a, -b) is:
(a) A reflection about the line y = x.
(b) A translation through the vector (-1, -1).
(c) A similitude with scale factor 3.
(d) A rotation of 90°.
(a) A reflection about the line y = x.
Mathematics
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Perform the indicated operation or operations.
A. 
B. 
C. 
D. 
Mathematics
Find the perimeter of the polygon.
A. 7.7 m B. 15.4 m C. 13.2 m D. 9.9 m
Mathematics
Express the graph shown using interval notation. Also express it as an inequality involving x.
A. (8, 9) 8 < x < 9 B. [8, 9] 8 ? x ? 9 C. [8, 9) 8 ? x < 9 D. (8, 9] 8 < x ? 9
Mathematics
Solve the problem.Ellen is knitting a scarf with one 4
-inch blue stripe, one 2
-inch green stripe, and one 2
-inch white stripe. How wide is the scarf?
A. 3
inches
B. 9
inches
C. 
inch
D. 
inch
Mathematics