WebSolve the inequality for x. To get rid of -7, add 7 on both sides-3x-7<20-3x<27. now we divide both sides by -3. Whenever we divide by any negative number we flip the inequality sign. x>-9. We use number line. x is greater than -9. So we shade the number line to the right of -9. Use open circle at -9 and shade to the right. WebNov 24, 2015 · When you divide both sides of the inequality by a negative number when solving the inequality, you must flip the signs. For example: -x ≥ 2 becomes x ≤ -2 , rather than x ≥ -2 Here is the reason why we do this. If we plug in x = -2 into the original inequality, the inequality is true.
Solving Inequalities - Math is Fun
WebMar 6, 2024 · You do not change the sign in regular equations. In equations you change the negative or positive sign when multiplying and dividing. Solve: 9 (x+3)>3 (x+9) 2.The inequality sign changes when multiplying or dividing by a negative number so that the solution is true. If the sign remains the same the answer will be false. WebIsabel Explains when to flip the inequality sign when solving an inequality. If you would like to see how to graph an inequality, check out this video: https... ohio baby found
WHY flip the sign?? (inequalities) - mathteacherslounge.com
WebWhich correctly describes how the graph of the inequality 4x − 2y > 20 is shaded? Before stating the direction of the shading, put this in slope intercept form first. 4x − 2y > 20 -4x-4x -2y>-4x+20 /-2 /-2 /-2 When you divide by a negative number, flip the inequality sign y<2x-10 Solid or dashed? Dashed WebFeb 22, 2024 · When to Flip the Inequality Sign Math with Mr. J Math with Mr. J 613K subscribers Subscribe 352 35K views 1 year ago Welcome to When to Flip the Inequality … WebWhen Does An Inequality Sign Flip? There are several situations when an inequality sign can flip: When you multiply both sides of the inequality by a negative number. When you divide both sides of the inequality by a negative number. When you take the reciprocal of both sides of an inequality (watch out for zero denominators!) ohio background check for employment