Download Ch 1.8 notes

Ch 1.8 notes
Coordinate Plane: two number lines that intersect at right angles.
X-axis: the horizontal axis.
Y-axis: the vertical axis.
Origin: where the axis intersect.
Quadrants: the four sections that make up the coordinate plane.
Ordered pair: identifies the location of a point.
y-axis
Coordinates: numbers in an ordered pair.
Ordered pair:
(9, 3)
X-coordinate Y-coordinate
origin
Quad. II
Quad. I
X-axis
Quad. III
Quad. IV
Independent variable (x-axis): An
independent variable is the variable you
have control over, what you can choose
and manipulate.
Dependent Variable (y-axis): A
dependent variable is what you
measure in the experiment and what is
affected during the experiment. The
dependent variable responds to the
independent variable. It is called
dependent because it "depends" on the
independent variable.
Muscle Mass
Scatter Plot: uses a coordinate plane to
display paired data. A scatter plot may
suggest whether a relationship exists
between two sets of data.
Hours spent in gym
Practice
• Plot the following points on a coordinate plane in your notes:
• (5, 3) (-2, -2) (3, 4) (3, -4)
• Give the coordinates of each point seen in the graph below:
• Graph the following data:
Hours spent
Studying
GPA
5
2
1
0
3.8
3.1
2.5
2.0