lectur11-page51 - The slope is defined to be the change in...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
51 The Slope Price 8 6 2 3 Quantity demanded per unit time (3,6) ( (3,6) ( x 1 , y 1 ) (2,8)** ( (2,8)** ( x 0 , y 0 ) Any two points can be used to determine a straight line. The slope of a straight line is constant. Therefore, any two points on a straight line can be used to calculate the slope of a straight line. Above, you see two points on a straight line identified. Point (2,8) and point (3,6). You see two asterisks next to point (2,8). The two asterisks indicate the point that I have chosen to represent “home plate.” When we hit the ball in baseball or softball, we always run FROM home plate TO first base. That is the rules!
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: The slope is defined to be the change in y divided by the change in x. Point (2,8) is home plate, so its “generic” coordinate becomes (x ,y ). Point (3,6) is first base, so its “generic” coordinate becomes (x 1 ,y 1 ). The slope = (y 1- y ) / (x 1- x ) = (6-8) / (3-2) = -2 / 1 = -2 If your head spinning, then try to remember the following: We always run from home plate to first base. Home plate is designated as 0, and first base is designated as 1. Slope = (y I am going TO - y I am coming FROM) divided by (x I am going TO - x I am coming FROM)....
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online