Equations and Inequalities Simple One step Solutions.

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Presentation transcript:

Equations and Inequalities Simple One step Solutions

How will I be asked to use this on the CRCT? What is a solution to the following equation 4x + 1 =9 A) 2 B) 3 C) 4 D) None of the above Substitute each answer in for x. The answer that creates a true statement is the correct answer

Real Life Problem You are buying ingredients for tacos. At the store you find that tortillas cost $2.99, beans cost $0.99, cheese costs $3.99, two tomatoes cost $1.00, and sour cream costs $1.49. There is no tax. You paid $ How much did you spend on beef?

Inequalities An inequality is a math sentence that shows a comparison between the two sides of the statement. An example of this is x>5 What are four solutions to this statement? What are two non solutions?

Check to see if these are solutions to the following problem 3n – 4 ≤ 8 n = 2 n = 3 n = 4 n = 5 What is the inequality that states all the possible solutions for this statement?

Real life inequality Your vet says that you must restrict your cat’s caloric intake to no more than 500 calories per day. If you feed your cat twice a day, can you feed your cat a can of food that has 300 calories every time she eats? Prove it!

Inverse operations To solve a one step equation or inequality, you use the inverse operation Examples: x + 4 = = -4 x = 8 X / 10 < 20  10  10 x < 200 Mentally check your work through estimation or substitution

Your turn to practice Do page 27 # 1-25 Create a word problem that could be used on the chapter 1 test that asks students to find a solution for an inequality How did you do? 15 correct is 60% You passed the CRCT 18 correct is 70% You passed Algebra

Final Thoughts Where are you at in completing your vocabulary words? Are you keeping up with your homework? First major quiz is this Friday Let me know how you are doing 1: I am so confused I am going to fail this quiz 5: I need to study but I’m okay 10: Yippee!!! I will have an A for sure!!!!