3.1 3.2 notes
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Launch: Overview of Coordinate Plane
Day 31: 3.1 and 3.2 Getting Started & Transformations
x‐axis
y‐axis
origin
ordered pairx‐coordinate
y‐coordinate
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AB
CD
EF
O
Identifying Ordered Pairs:
I. (1, 2) II. (‐1, 2)III. (1, ‐2) IV. (0, 0)
What are the othercoordinates?
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(3, 7)
Other CoordinatePlane Practice:
l
Line l is vertical andpasses through (3, 7).
a. Find 6 points on l.b. Find 6 points not on l.c. How can you tell if a point is or isn't on l by looking at its coordinates?
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For you to thinkabout:
1. The y‐axis is the only vertical line that passes through (0, 0). What do the coordinates of the points on the y‐axis have in common?
Do the points on the x‐axis follow the same pattern?
2. Graph a horizontal line through (‐2, 1) in a coordinate plane. Name two other points on the line.
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What about this? 3. Shade the region or set of points on a coordinate plane where you find (a,b) in the following cases:
a. 3≤a≤4 and 0≤b≤1b. 2≤a≤5 and 0≤b≤1
a. b.
Complete #8 on page 191 on your own. (3 minutes)
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3.2 Transformations
Turn to pg. 196.
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Refer to the coordinate graph on the left and answer the following questions:
1.) Where can you find a point whose x‐coordinate is negative? positive? zero?
2.) Where can you find a point whose y‐coordinate is negative? positive? zero?
3.) Where can you find a point whose x‐coordinate is 8?
4.) Where can you find a point whose y‐coordinate is ‐6?
5.) Where can you find a point whose y‐coordinate is less than its x‐coordinate?
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Homework: pg. 193 #11, 15, 19pg. 200 #6‐8, 10, 12, 13
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