Which statement about the following system is correct?
y=x-6
y=-x-2
a. the equations are independent because the lines intersect in one point.

b. the equations are independent because the equations represent parallel lines.

c. the equations are dependent because the lines are the same line.

d. the equations are dependent because the lines do not intersect.

True or false? many triangular shapes can be circumscribed about a given circle

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?