In this video the instructor shows how to derive a general equation for a line in PointSlope form. The slope of an equation is the ratio of difference of y coordinates to the difference of x coordinates. In other words, slope is the change of y up on change of x. So you have the basic slope equation m = (y2  y1)/(x2  x1). When you have fractions you can simplify them by multiplying the denominator to the numerator on both sides. So multiply the equation by (x2x1) on both sides. This gives you m(x2  x1) = (y2  y1). This is the general form of a line in point slope form. So the general equation can be also written as (y  y1) = m(x  x1). This video shows you how to write an equation of line in PointSlope form.
 Hot
 Latest

How To: Do long division without a calculator

How To: Remember "greater than" & "less than" symbols

How To: Divide small numbers by big numbers

How To: Find extra points for a parabola (quadractic equation)

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)

How To: Convert between diameter and radius

How To: Find the area of irregular shapes

How To: Calculate Faster Than a Calculator

How To: Calculate the height and volume of a pyramid

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Find a missing coordinate given: coordinate & equation

How To: Figure out the domain & range of a piecewise function

How To: Understand the differences / similarities between squares, rectangles & rhombi

How To: Find the area of a parallelogram and a triangle

How To: Plot absolute values on a number line

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the Percent Given Two Numbers

How To: Find the area of a triangle when given 2 sides & angle

How To: Find the area of a parallelogram using geometry

How To: Find the formula of a piecewise function given a graph

How To: Do long division without a calculator

How To: Remember "greater than" & "less than" symbols

How To: Divide small numbers by big numbers

How To: Find extra points for a parabola (quadractic equation)

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)

How To: Convert between diameter and radius

How To: Find the area of irregular shapes

How To: Calculate Faster Than a Calculator

How To: Calculate the height and volume of a pyramid

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Find a missing coordinate given: coordinate & equation

How To: Figure out the domain & range of a piecewise function

How To: Understand the differences / similarities between squares, rectangles & rhombi

How To: Plot absolute values on a number line

How To: Find the area of a parallelogram and a triangle

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the Percent Given Two Numbers

How To: Find the area of a triangle when given 2 sides & angle

How To: Find the area of a parallelogram using geometry

How To: Find the formula of a piecewise function given a graph
Be the First to Comment
Share Your Thoughts