The second topic that well be looking at is that of

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: or 2x - 3 > 7 2 x > 10 x>5 The interval notation for these are ( -¥, -2 ) or ( 5, ¥ ) . [Return to Problems] (b) 6t + 10 ³ 3 Let’s just plug into the formulas and go here, 6t + 10 £ -3 or 6t £ -13 or 13 t£or 6 13 ù æ The interval notation for these are ç -¥, - ú or 6û è 6t + 10 ³ 3 6t ³ -7 7 t³6 é7 ö ÷ ê- 6 , ¥ ø . ë [Return to Problems] (c) 2 - 6 y > 10 Again, not much to do here. 2 - 6 y < -10 - 6 y < -12 or or y>2 or 2 - 6 y > 10 - 6y > 8 4 y<3 Notice that we had to switch the direction of the inequalities when we divided by the negative æ è 4ö 3ø number! The interval notation for these solutions is ( 2, ¥ ) or ç -¥, - ÷ . [Return to Problems] © 2007 Paul Dawkins 149 http://tutorial.math.lamar.edu/terms.aspx College Algebra Okay, we next need to take a quick look at what happens if b is zero or negative. We’ll do these with a set of examples and let’s start with zero. Example 3 Solve each of the following. (a) 3 x + 2 < 0 [Sol...
View Full Document

Ask a homework question - tutors are online