expressions, equations and inequalities ch. 1.4 solving equations eq:how can i create equations to...
TRANSCRIPT
Expressions, Equations and Inequalities
Ch. 1.4 Solving Equations
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Bell Work
Simplify 1. -(a+2b) + 4(a+2b) – 2(a+2b)
2. Write an algebraic expression and solve it for following; Your car’s gas tank holds 25 gallons, if it is full and you use 1.5 gallons per day, how long until you run out of gas?
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Algebraic Expressions
READAll of the one-variable equations in this
lesson are linear (first degree) equations. Usually if a one-variable linear equation has a solution, then it has exactly one real solution. One-variable equations of higher degrees can have more than one real solution.
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Solving a one-step equation
What is the solution of x + 4 = -12?
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Solving a one step equation
Now you try…
What is the solution of 12b = 18?
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Solving a multi-step equation
What is the solution -27 + 6y = 3(y-3)
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Solving a multi-step equation
Now you try…
3(2x-1) – 2(3x+4) = 11x
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Special circumstances…
Is the equation always, sometimes, or never true? 11 + 3x – 7 = 6x + 5 – 3x
6x+5-2x=4+4x+1
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Special circumstances…
Now you try…
7x+6-4x=12+3x-8
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Literal Equations
This equation relates temperatures in degrees Fahrenheit and degrees Celsius. What is F in terms of C?
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Literal Equations
Now you try…
K = C + 273, Solve for C
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Partner Time!
Listen to Mrs. Johnson for further instruction.(Isn’t she so cute!?)
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Practice with your partner… (if time allows)
Pg. 22, 10-18 EVEN, 30-34 EVENPg. 30, 11-39 ODD
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.
Closure
(On your bell sheet)
Create your own real-world situation that can be modeled with an algebraic expression. Explain
the problem and how to solve it.
EQ:How can I create equations to solve problems? ? I Will...Create equations and use that equation to solve problems.