18 Which compound statement is true?

(1) A triangle has three sides and a quadrilateral has five
sides.

(2) A triangle has three sides if and only if a quadrilateral
has five sides.

(3) If a triangle has three sides, then a quadrilateral has five
sides.

(4) A triangle has three sides or a quadrilateral has five
sides.

19 The two lines represented by the equations below are graphed

on a coordinate plane.

x + 6y = 12

3(x - 2) = -y - 4

Which statement best describes the two lines?

(1) The lines are parallel.

(2) The lines are the same line.

(3) The lines are perpendicular.

(4) The lines intersect at an angle other than 90°.

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