Which of the following equations is non-linear? a. x + 5y = y + 15
b. x + 15x + 30x - 15 = 10y - 15
c. 11x = 5y + 10 - x
d. 3x + 1 = -4x + 12 -2y 2

Does anyone know of a quizlet or something for edmentrum /plato algebra 1

What two criteria are needed for triangles to be similar

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?