Unit 3 Study Guide (Parallel & Perpendicular Lines)

Topic 5: Parallel, Perpendicular, or neither?!

For questions 22 - 25 , determine if the lines are parallel, perpendicular or neither.

22. 6x + 10y = 20 and 5x - 3y = 21

23. x - y = 4 and x + y = 9

24. x - 5y = 30 and 10y = 2x + 90

25. x = 5 and x = - 2

Find the balance at the end of 4 years if 1000 is deposited at the rate of

What is x3+3x2−16x−48 divided by x−1?

1- 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.2- 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 the first question?