# Write an equation in terms of x

Polynomials of small degree have been given specific names. The student is not able to solve a real-world problem by reasoning about the quantities. Examples of Student Work at this Level The student attempts a computational strategy to solve the problem but misinterprets the conditions stated in the problem.

The student does not attempt to write an equation. Can you restate the problem in your own words? What are you asked to find? What information are you given?

Can you explain how to determine the amount Elijah has paid so far? Instructional Implications Guide the student to determine the unknown quantity in the problem and represent it with a variable.

Explain the relationship among all quantities given or described.

## Circle Equations

Ask the student to determine the total amount of money Elijah would pay after one, two, three, and four months of membership. Assist the student in using these calculations to develop an equation that models the relationship among the quantities given in the problem.

Provide additional opportunities to model relationships among quantities with equations. Examples of Student Work at this Level The student: Correctly uses a computational strategy to solve the problem and does not write an equation.

Correctly uses a computational strategy but writes an incorrect equation. If you represent it with a variable, can you write an equation that models the relationship among the quantities described in the problem?

Instructional Implications Work with the student on modeling relationships among quantities with equations.

Ask the student to explicitly describe the meaning of any variables used in the equations. Emphasize the relationship between algebraic expressions and the quantities they represent in the context of the situations in which they arise.

Then guide the student to replace the varying quantity in parentheses with a variable to write the equation. Almost There The student is unable to use the equation to solve the problem.

Examples of Student Work at this Level The student writes the correct equation but then: Solves it incorrectly, such as combining unlike terms of 25 and 30m to get 55m. Writes mathematically incorrect statements while solving e. Makes mathematical errors in the solution process.

Questions Eliciting Thinking Can you solve your equation? What would the solution of your equation indicate about the answer to the question posed in this problem?

Could you have written an equation without having solved the problem first? Instructional Implications Explain to the student that writing and solving an equation is an effective strategy for solving mathematical problems. In this problem, the objective in writing and solving the equation is to answer the question posed in the problem.

Ask the student to solve his or her equation and explain what the solution means in the context of the problem. Have the student explain the meaning of the variable in context and the significance of the solution in solving the word problem. Got It The student provides complete and correct responses to all components of the task. Examples of Student Work at this Level The student writes and solves an equation to determine Elijah paid for three months at the gym.

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## Find the Equation of a Line Given That You Know Two Points it Passes Through - WebMath

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Note: General Form always has x 2 + y 2 for the first two terms.. Going From General Form to Standard Form. Now imagine we have an equation in General Form.

## Standards in this domain:

x 2 + y 2 + Ax + By + C = 0. How can we get it into Standard Form like this? (x-a) 2 + (y-b) 2 = r 2 The answer is to Complete the Square (read about that) twice once for x and once for y.

Edit Article How to Solve for X. In this Article: Article Summary Using a Basic Linear Equation With Exponents Using Fractions Using Radical Signs Using Absolute Value Community Q&A There are a number of ways to solve for x, whether you're working with exponents and radicals or if you just have to do some division or multiplication.

plombier-nemours.comtEE.C.9 Use variables to represent two quantities in a real-world problem that change in relationship to one another; write an equation to express one quantity, thought of as the dependent variable, in terms of the other quantity, thought of as the independent variable.

Analyze the relationship between the dependent and independent variables using graphs and tables, and.

Find the Equation of a Line Given That You Know Two Points it Passes Through - WebMath