slope
What is the slope of a constant function y = 3?
0
In a linear equation of the form y = mx + b, which term represents the y intercept?
Which r value number is not possible?
r = -.096
r=1.54
r=.867
r = 1.54; r values are between -1 and 1
For y = 7x, find y when x = 3
(3, ?)
y = 21
Who provided the voice for Yoda in all the Star Wars movies?
Frank Oz, of the Muppets
What is the slope of the equation y = 2x - 5?
m = 2
What is the y intercept of the equation
y = -1/3x + 2/5?
b = 2/5
a) r = .23
b) r = -.92
c) r = -.15
b; r = -.92
for y = 2x - 1, find y when x = 1/2
(1/2, ?)
x = 0
Mercury
Which line has a steeper graph:
a). y = 1/2x + 4
b) y = 3/4x - 11
y = 3/4x - 11 because 3/4 > 1/2
What is the y intercept of the equation
y = 0.3x - 11.7?
b = 11.7
What do r values near 0 mean?
The data are weakly correlated or not very linear
for y = -2x + 4, find y when x = 4
(4, ?)
y = -4
What is the name of Elsa's sister, from Frozen?
Anna
m = 3/7
For the equation y = 4x - 3, what are the two coordinates of the y intercept?
(0, -3)
Data that is strongly correlated:
a) Lies near a straight line
b) Forms a circular cloud
c) Is always uphill
a) Lies near a straight line.
for y = 2/3x - 1/3, find y when x = 3
(3, ?)
x = 1.667 or 1 2/3
What is the largest planet in our solar system?
Jupiter
What do we say about the slope of a vertical line?
A function describing the length y, in inches of your hair after x months have gone by is given by the equation y = 1.2x + 1.5. In this equation what does the y intercept value represent?
Your hair was 1.5 inches long when the time started.
What does a negative r value mean?
The data is trending downhill and has negative slope.
(0, ?)
y = 2.77, the y intercept
What is the fastest land animal?
Cheetah (~70 mph)