# How Do You Do?

## Not Just a Polite Greeting

Well now, sir or madam, How Do You Do? No, really! How do you find the slope of a line? How do you solve a quadratic equation? Answers to these questions and many, many more are here. Created for those who need a quick reference on topics they are already familiar with, "How Do You Do" is a collection of very commonly sought-after math questions, categorized by topic. This is a popular way to find the fast answer to a question without necessarily diving into the entire complete lesson on the topic. Each of these questions are part of lessons in the DNA of Math, and answers link to full web lessons if you do in fact need to dive in for a full refresh on the topic.

Click on a category to see its contents.

How do you find the area of a circle?

How do you find the area of a trapezoid?

How do you find the area of a circle sector?

How do you find the arc length or perimeter of a circle sector?

How do you find the missing side of a right triangle?

How do you find the missing side of a scalene triangle? - Coming Soon!

How do you find the volume and surface area of a rectangular prism (box)?

How do you find the volume and surface area of a cone?

How do you find the volume and surface area of a cylinder?

How do you find the volume and surface area of a pyramid? - Coming Soon!

How do you find the volume and surface area of a cube?

How do you find the volume and surface area of a sphere?

How do you add and subtract positive and negative numbers? - Coming Soon!

How do you multiply and divide positive and negative numbers? - Coming Soon!

How do you get all the factors of a number? - Coming Soon!

How do you find the prime factorization of a number? - Coming Soon!

How do you find the GCF of two or more numbers? - Coming Soon!

How do you find the LCM of two or more numbers? - Coming Soon!

How do you combine like terms? - Coming Soon!

How do you isolate a variable? - Coming Soon!

How do you use exponent rules correctly? - Coming Soon!

How do you multiply or divide rational expressions? - Coming Soon!

How do you add or subtract rational expressions? - Coming Soon!

How do you solve a linear equation? - Coming Soon!

How do you solve a linear inequality? - Coming Soon!

How do you solve an absolute value equation? - Coming Soon!

How do you solve an absolute value inequality? - Coming Soon!

How do you solve an equation with square roots in it? - Coming Soon!

How do you solve a rational expression equation? - Coming Soon!

How do you solve a quadratic equation? - Coming Soon!

How do you solve a quadratic inequality? - Coming Soon!

How do you solve a rational expression inequality? - Coming Soon!

How do you solve an exponential equation without logarithms? - Coming Soon!

How do you simplify a numerical fraction to lowest terms? - Coming Soon!

How do you convert a fraction to a specific denominator?

How do you convert two fractions so that they have the same denominator? - Coming Soon!

How do you solve an equation with decimal coefficients? - Coming Soon!

How do you solve an equation with fraction coefficients? - Coming Soon!

How do you convert fractions to decimals? - Coming Soon!

How do you convert non-repeating decimals to fractions? - Coming Soon!

How do you convert repeating decimals to fractions? - Coming Soon!

How do you simplify a fraction that contains variables? - Coming Soon!

How do you simplify the square root of an integer? - Coming Soon!

How do you simplify the square root of a variable expression? - Coming Soon!

How do you take the square root of a fraction? - Coming Soon!

How do you rationalize a fraction with a root denominator? - Coming Soon!

How do you find the roots of a quadratic equation?

How do you find the roots of a polynomial? - Coming Soon!

How do you find the imaginary roots of a number?

How do you graph a polynomial by hand? - Coming Soon!

How do you factor a large degree polynomial? - Coming Soon!

How do you determine the degree of a polynomial from its graph? - Coming Soon!

How do you perform polynomial long division? - Coming Soon!

How do you perform polynomial synthetic division? - Coming Soon!

How do you find the end behavior of a polynomial? - Coming Soon!

How do you find the domain of a function? - Coming Soon!

How do you find the range of a function? - Coming Soon!

How do you apply the vertical line test? - Coming Soon!

How do you work with function transformations? - Coming Soon!

How do you evaluate a piecewise function? - Coming Soon!

How do you work with function composition? - Coming Soon!

How do you find the inverse of a function? - Coming Soon!

How do you find a function's average rate of change? - Coming Soon!

How do you find the slope between two points?

How do you find the midpoint between two points?

How do you find the equation of the line between two points? - Coming Soon!

How do you find a line that is parallel to another line? - Coming Soon!

How do you find a line that is perpendicular to another line? - Coming Soon!

How do you find the intercepts of a line? - Coming Soon!

How do you calculate where two curves intersect? - Coming Soon!

How do you graph a linear inequality? - Coming Soon!

How do you graph a piecewise function? - Coming Soon!

How do you graph a quadratic function? - Coming Soon!

How do you graph a rational function? - Coming Soon!

How do you graph a radical function? - Coming Soon!

How do you measure angles in the coordinate plane? - Coming Soon!

How do you graph a exponential function? - Coming Soon!

How do you find a reference angle in the coordinate plane? - Coming Soon!

How do you find the sine, cosine, or tangent of an angle without a calculator?

How do you solve an equation with trig functions? - Coming Soon!

How do you prove a trig identity?

How do you graph a sine or cosine function?

How do you graph a tangent or cotangent function? - Coming Soon!

How do you graph a secant or cosecant function? - Coming Soon!

How do you write a logarithm in exponential form? - Coming Soon!

How do you expand or condense a logarithm?

How do you graph a log function? - Coming Soon!

How do you change log base without a calculator?

How do you solve an exponential equation with logarithms? - Coming Soon!

How do you simplify a limit that initially gives you zero over zero? - Coming Soon!

How do you show that a function is continuous using limits? - Coming Soon!

How do you show that a function is differentiable using limits? - Coming Soon!

How do you calculate the derivative using the limit definition? - Coming Soon!

How do you find the slope of a curve at a given point?

How do you find the equation of a line that is tangent to a curve at a given point?

How do you take the derivative of a polynomial?

How do you take the derivative of an exponential expression?

How do you take the derivative of an logarithmic expression? - Coming Soon!

How do you take the derivative of a trig function? - Coming Soon!

How do you find the intervals of increase and decrease? - Coming Soon!

How do you find the intervals of concavity? - Coming Soon!

How do you integrate polynomials? - Coming Soon!

How do you integrate exponentials? - Coming Soon!

How do you integrate trig functions? - Coming Soon!

How do you find the average value of a function?

How do you calculate a volume of revolution - Coming Soon!

How do you calculate the arc length of a function on a given interval? - Coming Soon!

How do you calculate the standard deviation of a data set by hand? - Coming Soon!

How do you determine whether outliers exist in a data set? - Coming Soon!

How do you determine whether two sample proportions are statistically different?