7 4 solving rational equations inequalities
Download
1 / 9

7.4 Solving Rational Equations & Inequalities - PowerPoint PPT Presentation


  • 278 Views
  • Uploaded on

7.4 Solving Rational Equations & Inequalities. Day 2. Rational Inequalities. Solve for x using the calculator. Set the equation equal to zero Graph in your calculator. Where is the graph GREATER THAN zero? Use the trace function.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' 7.4 Solving Rational Equations & Inequalities' - laszlo


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Rational inequalities
Rational Inequalities

  • Solve for x using the calculator

Set the equation equal to zero

Graph in your calculator

Where is the graph GREATER THAN zero? Use the trace function.

You can also go to the table and look at the values to see when the y-values start to get larger than zero.


Rational Inequalities

  • Solve for x using the calculator

Set the equation equal to zero

Graph in your calculator

Zero: x = 1/2

VA: x = 2

Step 2: Put the left hand side into y1 and the right hand side into y2.

Step 3: Use the zero feature to find where the graph of y1 lies above the x-axis.

Solution:


Rational Inequalities

  • Solve for x using the calculator

Set the equation equal to zero

Graph in your calculator

Zero: x = -1.5

VA: x = -5

Step 2: Put the left hand side into y1 and the right hand side into y2.

Step 3: Use the zero feature to find where the graph of y1 lies above the x-axis.

Solution:


Rational Inequalities

  • Solve for x using the calculator

Set the equation equal to zero

Graph in your calculator

Zero: x = 0

VA: x = 1

Step 2: Put the left hand side into y1 and the right hand side into y2.

Step 3: Use the zero feature to find where the graph of y1 lies above the x-axis.

Solution:


Rational Inequalities

  • Solve for x using the calculator

Set the equation equal to zero

Graph in your calculator

VA: x = 7

VA: x = -5

Step 2: Put the left hand side into y1 and the right hand side into y2.

Step 3: Use the zero feature to find where the graph of y1 lies above the x-axis.

Solution:


Rational inequalities1
Rational Inequalities

Solve for x using the calculator

From 1990 to 2001, the number d (in thousands) of doctors in the United States can be modeled by the function where t is the number of years since 1990. When were there fewer than 800,000 doctors?

Step 1: Set up the inequality

Step 2: Put the left hand side into y1 and the right hand side into y2.

Step 3: Use the intersect feature to find where the graph of y1 lies below the graph of y2.

Solution: In the years 1990-1999, there were fewer than 800,000 doctors


Rate of work problems
Rate – of – Work Problems

It takes 7 hours for John to paint a house. Jerry can paint the same house in 5 hours. How long will it take them to paint the house if they work together?

TIME or t = time it takes John and Jerry to paint the house together.

Identify the variable

Write an equation.

Solve the equation.


In class assignment
In Class ASSIGNMENT

  • Homework: Page 600

    #1 – 17 odds

Worksheet – Homework if you don’t finish it in class


ad