_Equations of Horizontal and Vertical Lines
_
Equation of a Vertical Line
An equation of the vertical line through
the point (a, b) is x = a.
Equation of a Horizontal Line
An equation of the horizontal line through
the point (a, b) is y = b.
Find the equation of the horizontal and vertical lines through (-7, 4).
b = 4, so the equation of the horizontal line is y = 4.
a = -7, so the equation of the vertical line is x = -7.
Visit this website and watch the video: http://ocw.openhighschool.org/mod/book/view.php?id=4902&chapterid=1135 Pay attention to her discussion of parallel and perpendicular lines because we are working on those next.
This website provides another good explanation of horizontal and vertical lines: http://mathforum.org/cgraph/cslope/horizontal.html
PRACTICE
Practice your knowledge of slope and horizontal and vertical lines with this game: http://www.mathplayground.com/SaveTheZogs/SaveTheZogs.html. Don't forget to post your score in the game forum below.
ASSESS
To check for understanding, please take this interactive assessment: http://www.media.pearson.com.au/schools/cw/au_sch_bull_gm12_1
/dnd/3_hor.html. If the assessment is not working, you need to download the Adobe Flash player.
The last section of writing equations is Parallel and Perpendicular Lines.
Equation of a Vertical Line
An equation of the vertical line through
the point (a, b) is x = a.
Equation of a Horizontal Line
An equation of the horizontal line through
the point (a, b) is y = b.
Find the equation of the horizontal and vertical lines through (-7, 4).
b = 4, so the equation of the horizontal line is y = 4.
a = -7, so the equation of the vertical line is x = -7.
Visit this website and watch the video: http://ocw.openhighschool.org/mod/book/view.php?id=4902&chapterid=1135 Pay attention to her discussion of parallel and perpendicular lines because we are working on those next.
This website provides another good explanation of horizontal and vertical lines: http://mathforum.org/cgraph/cslope/horizontal.html
PRACTICE
Practice your knowledge of slope and horizontal and vertical lines with this game: http://www.mathplayground.com/SaveTheZogs/SaveTheZogs.html. Don't forget to post your score in the game forum below.
ASSESS
To check for understanding, please take this interactive assessment: http://www.media.pearson.com.au/schools/cw/au_sch_bull_gm12_1
/dnd/3_hor.html. If the assessment is not working, you need to download the Adobe Flash player.
The last section of writing equations is Parallel and Perpendicular Lines.