# Expressions and Equations

#### Work with radicals and integer exponents.

CC.8.EE.1 – Know and apply the properties of integer exponents to generate equivalent numerical expressions.

CC.8.EE.2 – Use square root and cube root symbols to represent solutions to equations of the form x2 = p and x3 = p, where p is a positive rational number. Evaluate square roots of small perfect squares and cube roots

of small perfect cubes. Know that √2 is irrational.

CC.8.EE.4 – Perform operations with numbers expressed in scientific notation, including problems where both decimal and scientific notation are used. Use scientific notation and choose units of appropriate size

for measurements of very large or very small quantities (e.g., use millimeters per year for seafloor spreading). Interpret scientific notation that has been generated by technology.

#### Understand the connections between proportional relationships,

lines, and linear equations.

CC.8.EE.6 – Use similar triangles to explain why the slope m is the same between any two distinct points on a non-vertical line in the coordinate plane; derive the equation y = mx for a line through the origin and the equation y = mx + b for a line intercepting the vertical axis at b.

#### Analyze and solve linear equations and pairs of simultaneous linear

equations.

CC.8.EE.7 – Solve linear equations in one variable.