The answer is not as easy to locate on the graph as an integer would be.

If we divide both sides by a positive number, the inequality is preserved. First, start at the origin and count left or right the number of spaces designated by the first number of the ordered pair.

The value of m is 6, therefore the slope is 6. We now locate the ordered pairs -3,9-2,7-1,50,31,12,-13,-3 on the coordinate plane and connect them with a line. You found in the previous section that the solution to a system of linear equations is the intersection of the solutions to each of the equations.

Solution First we recognize that the equation is not in the slope-intercept form needed to answer the questions asked. A linear equation graphs a straight line. We then find x by using the equation.

Locate these points on the Cartesian coordinate system and connect them with a line. Study the diagram carefully as you note each of the following facts.

What are the coordinates of the origin? To solve a system of two equations with two unknowns by substitution, solve for one unknown of one equation in terms of the other unknown and substitute this quantity into the other equation.

Remember that the solution for a system must be true for each equation in the system. If the point chosen is in the solution set, then that entire half-plane is the solution set. You could have chosen any values you wanted. Then we draw a line through this point and 0,4. Compare the coefficients of x in these two equations.

Since the solution 2,-1 does check. Since the point 0,0 is not in the solution set, the half-plane containing 0,0 is not in the set. In this case we simply multiply each side by What effect does a negative value for m have on the graph? The solution set is the line and the half-plane below and to the right of the line.

Many students forget to multiply the right side of the equation by In this case there is no solution. Then in the bottom line y we will place the corresponding value of y derived from the equation. The first number of the ordered pair always refers to the horizontal direction and the second number always refers to the vertical direction.

This will result in the same line. To express the slope as a ratio we may write -3 as or.

Remember, x is written first in the ordered pair. Solve this system by the addition method. Step 3 Solve the resulting equation.

A common error that many students make is to confuse the y-intercept with the x-intercept the point where the line crosses the x-axis. On this number line, points B and A are our original values of 2 and 5.

In section we solved a system of two equations with two unknowns by graphing. Ordered pairs of numbers are used to designate points on a plane. Step 2 Add the equations. If we take the same two numbers and multiply them by Note again that the solution does not include the lines.Write and Graph Linear Inequalities Concept Writing & Graphing Inequalities Pre Score 5 = Level 4 DEADLINE: (C) Level 2 1.

Watch the video (Level 2: Write Linear Equations) Complete the Notes & Basic Practice Check the Key and Correct Mistakes 2. Complete 2 of the following tasks.

Writing, Solving, and Graphing Inequalities in One Variable. Learning Objective · Solve algebraic inequalities in one variable using a combination of the properties of inequality.

· Represent inequalities on a number line. It contains the symbols, ≤, or ≥. To write an inequality, look for the following phrases to determine where to place the inequality symbol. Key Vocabulary inequality, p. solution of an inequality, p. solution set, p. graph of an inequality, p.

EXAMPLE 1 Writing Inequalities Write the word sentence as an inequality. a. Solve each inequality. Then graph the solution y Define a variable, write an inequality, and solve }. number. ¥ ¥ ¥) ¥ ¥ ¥ ¥, ¥ ¥ inequalities. Improve your math knowledge with free questions in "Write inequalities from graphs" and thousands of other math skills.

To solve a system of two linear inequalities by graphing, determine the region of the plane that satisfies both inequality statements. To solve a system of two equations with two unknowns by substitution, solve for one unknown of one equation in terms of the other unknown and substitute this quantity into the other equation.

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