Vocabulary
A function whose graph is a straight line
domain, range, linear function, y-intercept, slope-intercept form
linear function
What is the domain of this table.
x values- 0, 2, 4, 6, 8, 10
y values- 6, 10, 14, 18, 22, 26
Answer: ____ to _____
0 to 10
Write this as an equation ( y=mx+b)
Slope: -2
Y-Intercept: 1
y=-2x+1
Which is the rate of change? (slope)
y=2x+7
2
Which country was the first to use the tradition of the Christmas tree?
France, Unites States, Germany, Australia
Germany
The set of all possible input values of a function (x values)
domain, range, linear function, y-intercept, slope-intercept form
domain
What is the range of this table.
x values- 0, 2, 4, 6, 8, 10
y values- 6, 10, 14, 18, 22, 26
Answer: ____ to _____
6 to 26
Write this as an equation ( y=mx+b)
Slope: -1/2
Y-Intercept: -5
y=-1/2x-5
Which is the initial value? (+b)
y=2x+7
b=7
If there are 365 days in a year, what number day is Christmas Day?
359 days
The set of all possible output values of a function (y values)
domain, range, linear function, y-intercept, slope-intercept form
range
Draw this graph.
A hiker starts on top of a hill. He starts to walk down at a constant rate, then he walk along side of a river, then walks down at constant rate until he reaches his car at the bottom.
should start on y axis somewhere (not at origin)
line going down
line going across
line going down again until it hits 0
Solve for b
m=-2
one point (x,y) is (5,1)
(Hint: plug into y=mx+b and solve for b)
b=11
y=2x+7
One point is (x,y)= (25, y)
Plug in 25 for x and solve for y
y=57
Which one of Santa’s reindeer shares its name with another famous holiday character?
Cupid
Crosses at the y axis
domain, range, linear function, y-intercept, slope-intercept form
y intercept
Is this a function?
x values- 8, 8, 10, 10, 12, 12
y values- 2, 4, 6, 8, 10
No, some of the x values are the same
Solve for b
slope/m=4
one point (x,y) is (2,3)
(Hint: plug into y=mx+b and solve for b)
b=-5
y=2x+7
How many x name tags can you buy for y=$93.
x=43 name tags
Which is the first company which used Santa Claus for their advertisement?
Pepsi, Coca-Cola, Lays Chips, Pringles
Coca-Cola
A linear equation written in the form of
y=mx+b
domain, range, linear function, y-intercept, slope-intercept form
slope intercept form
Is this a function?
x values- 2, 4, 6, 8, 10
y values- 10, 12, 10, 14, 18
Yes, x values are all different
Write this as an equation ( y=mx+b)
m=-1
one point (x,y) is (2,4)
b=?
First solve for B, then write the equation
y=-1x+6
Find slope.
two points (x,y)= (4, 29) and (10,71)
m=?
=7
y/x
(71-29)/ (10-4)
42/6= 7
What is the most famous Christmas ballet?
The Nutcracker