Math III EOC Review #4

Front

What is the standard form of a circle's equation?

Back

The standard form of a circle's equation is (x - h)² + (y - k)² = r², where (h, k) is the center and r is the radius.

Front

How do you find the radius from the equation of a circle?

Back

To find the radius from the equation x² + (y + k)² = r², take the square root of r².

Front

What are the zeros of a function?

Back

The zeros of a function are the x-values where the function equals zero, often found by solving f(x) = 0.

Front

How do you determine the zeros from a graph?

Back

The zeros can be identified as the x-intercepts of the graph, where the curve crosses the x-axis.

Front

What is an arc in a circle?

Back

An arc is a portion of the circumference of a circle, defined by two endpoints on the circle.

Front

How do you find the measure of an arc?

Back

The measure of an arc can be found using the formula: (central angle/360) * circumference of the circle.

Front

What is a system of equations?

Back

A system of equations is a set of two or more equations with the same variables that are solved together.

Front

How do you solve a system of equations using substitution?

Back

To solve by substitution, solve one equation for one variable and substitute that expression into the other equation.

Front

What is the perimeter of a shape?

Back

The perimeter is the total distance around the outside of a shape, calculated by adding the lengths of all sides.

Front

How do you find the perimeter of a circle?

Back

The perimeter (circumference) of a circle is calculated using the formula C = 2πr, where r is the radius.