Two equations are shown:

equation a
y = −5x − 3

equation b
y = 4x + 5

which statement best compares the graphs of the two equations?

both are nonlinear.
both are linear.
equation a is nonlinear and equation b is linear.
equation a is linear and equation b is a nonlinear.

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit