mgb5e_ppt_3_4 - 3.4 Slope and Rate of Change Slope of a...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
§ 3.4 Slope and Rate of Change
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Martin-Gay, Beginning Algebra, 5ed 2 Slope of a Line Slope of a Line 1 2 1 2 1 2 x x x x y y change x change y run rise m - - = = =
Background image of page 2
Martin-Gay, Beginning Algebra, 5ed 3 Slope of a Line Slope of a Line Positive Slope: m > 0 x y Lines with positive slopes go upward as x increases. Negative Slope: m < 0 x y Lines with negative slopes go downward as x increases.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Martin-Gay, Beginning Algebra, 5ed 4 Find the slope of the line through (4, – 3 ) and (2, 2) If we let ( x 1 , y 1 ) = (4, – 3) and ( x 2 , y 2 ) = (2, 2), then 2 5 4 2 ) 3 ( 2 - = - - - = m 2 5 2 4 2 3 - = - - - = m Note: If we let ( x 1 , y 1 ) be (2, 2) and ( x 2 , y 2 ) be (4, – 3), then we get the same result. Example: Finding the Slope Given Two Points
Background image of page 4
Martin-Gay, Beginning Algebra, 5ed 5 Slope-Intercept Form When a linear equation in two variables is written in the slope-intercept form, y = mx + b m is the slope and (0, b ) is the y -intercept of the line. Slope-Intercept Form of a Line y = 3 x – 4 The slope is 3.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 14

mgb5e_ppt_3_4 - 3.4 Slope and Rate of Change Slope of a...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online