Linear Equations and Inequalities

Define Equation?

• An equation is a type of graph.
• An equation is a single number.
• An equation is a mathematical statement that shows the equality of two expressions.
• An equation is a method of solving problems.

Is x = -3 a solution for 4x = -12?

• True
• False

Solve for x + 2 =6

Mathematical Equivalence

ON

Solve for x - 7 = 12

Mathematical Equivalence

ON

Solve -6t = 138

Mathematical Equivalence

ON

Define inequality

• An inequality is a graphical representation of data points on a chart.
• An inequality is a type of equation that shows equality between two values.
• An inequality is a method used to solve for unknown variables in algebra.
• An inequality is a mathematical expression that indicates the relative size or order of two values.

What are the signs inequality

• ===
• <, >, <=, >=, !=
• ==
• <>

Graph x > 3

• Graph with a closed circle at 3 and shading to both sides.
• Graph with an open circle at 3 and no shading.
• Graph with an open circle at 3 and shading to the right.
• Graph with a closed circle at 3 and shading to the left.

What word problem best represents x < 2

• A person has more than 2 apples.
• A person has 2 or more apples.
• A person has exactly 2 apples.
• A person has fewer than 2 apples.

When writing a contextual situation what should we find ?

• answer

• name

• variable

• equal to symbol