Secondary 2 - Number and Algebra
Standard 8.NA.7 - Evaluate variable inequalities.
Included Skills: Number Properties, Algebra
Equations and inequalities • 7.1 solving linear equations in one variable (including fractional coefficients) • 7.2 concept and properties of inequality • 7.3 solving simple fractional equations that can be reduced to linear equations such as x/3 + (x-2)/4 = 3, 3/(x-2) = 6 • 7.4 graphs of linear equations in two variables (ax + by = c) • 7.5 solving simultaneous linear equations in two variables by: - substitution and elimination methods - graphical method • 7.6 formulating a linear equation in one variable or a pair of linear equations in two variables to solve problems • 7.7 formulate inequalities from real-world contexts. • 7.8 Use Graphmatica, applets or other software to draw the graph of ax + by = c (a straight line), check that the coordinates of a point on the straight line satisfy the equation, and explain why the solution of a pair of simultaneous linear equations is the point of intersection of two straight lines. • 7.9 Draw the lines x = a and y = b, and describe the lines and their gradients. • 7.10 Use the Algebar application in AlgeTools to formulate linear equations to solve problems (Students can draw models to help them formulate equations.)