Algebra Formulas Quiz

Questions and Answers

What is the formula for slope?

m = y2 - y1 / x2 - x1 (correct)

m = (x2 - x1) / (y2 - y1)

m = y1 - y2 / x1 - x2

m = (y1 - y2) / (x1 - x2)

What is the slope-intercept form of a line?

y = b + mx

y = bx + m

y = ax + b

y = mx + b (correct)

What is the equation of a circle?

(x - h)² + (y - k)² = r² (correct)

(x + h)² - (y - k)² = r²

(x - h)² + (y + k)² = r²

(x + h)² + (y + k)² = r²

What is the Pythagorean theorem?

a² + b² = c² Signup and view all the answers

What is the difference of perfect cubes formula?

a³ - b³ = (a - b)(a² + ab + b²) Signup and view all the answers

What is the quadratic formula?

x = -b ± √(b² - 4ac) / (2a) Signup and view all the answers

What is the point-slope form of a line?

y = y1 + m(x - x1) Signup and view all the answers

What is the distance formula?

d = √((x1 - x2)² + (y1 - y2)²) Signup and view all the answers

What is the midpoint formula?

( (x1 + x2)/2 , (y1 + y2)/2 ) Signup and view all the answers

What is the formula for the difference of perfect squares?

a² - b² = (a - b)(a + b) Signup and view all the answers

What is the sum of perfect cubes formula?

a³ + b³ = (a + b)(a² - ab + b²) Signup and view all the answers

Study Notes

Algebra Formulas

Slope: Calculated using the formula ( m = \frac{y_2 - y_1}{x_2 - x_1} ); represents the steepness of a line.
Slope-Intercept Form: Expressed as ( y = mx + b ), where ( m ) is the slope and ( b ) is the y-intercept, indicating the point where the line crosses the y-axis.
Circle Equation: Represents a circle in a coordinate plane as ( (x - h)^2 + (y - k)^2 = r^2 ); ( (h, k) ) is the center, and ( r ) is the radius.
Pythagorean Theorem: Fundamental relation in Euclidean geometry, stated as ( a^2 + b^2 = c^2 ), where ( c ) is the hypotenuse of a right triangle.
Difference of Perfect Cubes: Formula given by ( a^3 - b^3 = (a - b)(a^2 + ab + b^2) ); useful for factoring cubic expressions.
Quadratic Formula: Used to find the roots of a quadratic equation; expressed as ( x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} ).
Point-Slope Form: Written as ( y = y_1 + m(x - x_1) ); used to write the equation of a line given a point ((x_1, y_1)) and the slope ( m ).
Distance Formula: Determines the distance between two points in a plane, defined as ( d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2} ).
Midpoint Formula: Finds the midpoint between two points ((x_1, y_1)) and ((x_2, y_2)); calculated as ( \left(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2}\right) ).
Difference of Perfect Squares: Expressed as ( a^2 - b^2 = (a - b)(a + b) ); a key technique for factoring.
Sum of Perfect Cubes: Given by the formula ( a^3 + b^3 = (a + b)(a^2 - ab + b^2) ); essential for simplifying expressions involving cubes.

Description

Test your knowledge of essential algebra formulas, including the slope, circle equation, Pythagorean theorem, and quadratic formula. This quiz will challenge your understanding of these critical concepts in algebra. Prepare to apply your skills in problem-solving using these forms!