More equations and systems for the Friday exam:

Solution


                                                       Solution

Solution

                                                 Solution



                                                                        Solution

Solution

Solution

LINEAR FUNCTIONS

Vocabulary and basic concepts

For my students of  4º ESO A:

HOMEWORK

         

                             

6 World Problem Inequalities for tomorrow

HOMEWORK for next monday:

For 4º ESO B

Just watch the following two videos

   Graph inequalities in the Real Plane

Graphing Linear Inequations

For 4º ESO A

Do these world problems

 1.  More than 450 students went on a field trip. Ten buses were filled and 5 more students traveled in a car.

a) Write an inequality to represent the situation. Be sure to define your variable.

b) Solve the inequality to find the minimum number of people on each bus.

2.  You need to buy some pencils and an eraser. You can spend no more than $5. The eraser costs $1 and  the pencils cost $0.25 each

a)Write an inequality to represent the situation. Be sure to define your variable.

b) Solve the inequality to find the maximum number of pencils you can buy.

3.  Four times the sum of a natural number and 15 is at maximum 120. Let x represent the number. Find all possible values of x.

Watch the video

Graphing a system of linear inequalities

Solve graphically the next system of linear inequalities:

y < - x + 1

y >   x + 3

Remenber, today you have to do 5 questions of the exam that appear in the following
online page:

Online inequalities

If you want to rewiev the contents of the REAL NUMBERS and   ALGEBRA parts in the exam of thursday:

Real numbers

Radicals I

Identidades notables

Factorization and algebraic fractions

Algebraic fractions I

Algebraic fractions II

Equations I

Equations II

Biquadratic equations II

Simultaneous equations I

Simultaneous equations II

Equations and systems problems I

Equations and systems problems II

NO MATHS!! Just for fun ( an amazing way to memorize The Periodic Table):

 Cantando la tabla periódica

VOLUNTARY HOMEWORK for next week:


Linear inequalities:

Worksheet 1

Quadratic inequalities:

Worksheet 2

You can give them to me till next friday

Inequations

Video: Solving First Grade Inequations

Video: Solving Quadratic Inequations

Online Unit: Inequations

And. just for fun, using inequalities: What animal Are you?

And, just for fun without using inequalities: Choose a Key