# Write an inequality that describes the graph

Example 2 Sketch the graph and state the slope of Solution Choosing values of x that are divisible by 3, we obtain the table Why use values that are divisible by 3?

In 7 years, Ellie will be old enough to vote in an election. Check in both equations. To graph a linear inequality: Write a linear equation in standard form.

Do this and solve the system. Positive is to the right and up; negative is to the left and down. The change in x is -4 and the change in y is 1. If you choose to eliminate y, multiply the first equation by - 2 and the second equation by 3.

You will study these in future algebra courses. Solution Step 1 We must solve for one unknown in one equation. The original illustration shows an open figure as a result of the shortness of segment HG.

Neither unknown will be easier than the other, so choose to eliminate either x or y. A, is has the largest measure in?

Now study the following graphs. By the ASA Postulate, we can say that? If the point chosen is not in the solution set, then the other halfplane is the solution set. Solution Placing the equation in slope-intercept form, we obtain Sketch the graph of the line on the grid below.

If for some reason, a triangle were to have one side whose length was greater than the sum of the other two sides, we would have a triangle that has a segment that is either too short so that the triangle is not closedor too long so that a side of the triangle extends too far.

We will readjust the table of values and use the points that gave integers. A is congruent to? The line indicates that all points on the line satisfy the equation, as well as the points from the table. Rene Descartes devised a method of relating points on a plane to algebraic numbers.

In this case any solution of one equation is a solution of the other.

Following are graphs of several lines. Remember, x is written first in the ordered pair. This inequality has shown us that the value of x can be no more than We have already used the number line on which we have represented numbers as points on a line.

This is in fact the case.

If one angle of a triangle has a greater degree measure than another angle, then the side opposite the greater angle will be longer than the side opposite the smaller angle. The resulting point is also on the line.We explain Writing a Linear Inequality from a Graph with video tutorials and quizzes, using our Many Ways(TM) approach from multiple teachers.

This lesson will demonstrate how to write a linear inequality from a graph. To graph an inequality, treat the, or ≥ sign as an = sign, and graph the equation. If the inequality is, graph the equation as a dotted line. If the inequality is ≤ or ≥, graph the equation as a solid line.

This line divides the xy-.

Write the inequality that best describes each graph: 1) Inequality: 2) Inequality: 3) Inequality: 4) Write the inequality that best describes each graph: 1) Inequality: 2) Inequality: 3) Inequality: 4) Inequality: 5) Writing Inequalities.

Write an inequality that describes the solutions. (The solutions can also be given as a solution set, or they can be described with a number line graph.) Describe how a graph can indicate special cases of inequalities.

We could write this inequality as: e + 7 ≥ 18, where e represents Ellie’s age. We can then use the Subtraction Property of Inequality to solve for e. e + 7. Absolute Value Inequalities The ``forget the minus sign" definition of the absolute value is useless for our purposes. Instead, we will mostly use the geometric definition of the absolute value.

Write an inequality that describes the graph
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