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Published byErica Campbell Modified over 9 years ago
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Bell Work 11/12/14 Graph the points on the number line.
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Chapter 5A Linear Functions I
Next Chapter Chapter 5A Linear Functions I
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The Coordinate Plane Heading 4/16/2017
TSWBAT: plot points on a coordinate plane and identify the quadrant. Students graph a linear equation and compute the x- and y- intercepts (e.g., graph 2x + 6y = 4). They are also able to sketch the region defined by linear inequality (e.g., they sketch the region defined by 2x + 6y < 4).
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Notes The Coordinate Plane x-axis = the horizontal axis y-axis
= the vertical axis origin = the center, is at point (0,0) y-axis x-axis origin
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Notes Ordered pair x-coordinate y-coordinate
x-coordinate = the number of spots on the x-axis if positive, go to the right if negative, go to the left y-coordinate = the number of spots on the y-axis if positive, go up if negative, go down
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What is the x-coordinate? What is the y-coordinate?
Notes Plot the ordered pair Ex. 1) Start at the origin. 2) Move to the right or left according to the x-coordinate. origin What is the x-coordinate? 3) Move up or down according to the y-coordinate. What is the y-coordinate?
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What is the x-coordinate? What is the y-coordinate?
Notes Now you try. Plot the ordered pair Ex. 1) Start at the origin. 2) Move to the right or left according to the x-coordinate. origin What is the x-coordinate? 3) Move up or down according to the y-coordinate. What is the y-coordinate?
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Notes Plot the points on the graph.
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Notes Now you try. Plot the points onto the graph.
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C Notes Quadrants What does quad mean?
a coordinate plane is split up by the x-axis and y-axis into four equal squares we label the quadrants I, II, III, IV C y Number them counter clock-wise The top right one is first because all of the numbers are positive. x
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Notes Identify the quadrant the point is in. Point Quadrant
Now you try.
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Summary To plot a point you need the points ___________. The first coordinate is the __-coordinate and it tells you how many spots to go right (if positive) or ____ (if negative). The next coordinate is the y-__________ and it tells you how many spots to go ___ (if positive) or down (if ________). coordinates x left coordinate up negative
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Today’s Homework Rules for Homework Pencil ONLY.
Must show all of your work. NO WORK = NO CREDIT Must attempt EVERY problem. Always check your answers.
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Homework Plot the points onto the graph and name the quadrant.
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Ticket Out the Door Complete the Ticket Out the Door without talking!!!!! Talking = time after the bell! Put your NAME on the paper. When finished, turn your paper face DOWN. Plot the point onto the graph and name the quadrant.
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