What type of graph is this? (Continuous or Discrete)
Continuous
A function is a type of relation in which there is only one ______ value for each _______ value. (fill in the blank)
output, input
y= 3x2
Write this equation in function notation
f(x)=3x2
f(x) = 3x-5
f(10)=?
f(10) = 25
slope =
-3/2 or -1 1/2
What is the domain and range of this graph?
D= {all real numbers}
R= {all real numbers}
(7,41), (8,45), (9,49), (10,52), (10,53), (11,55), (12, 59)
Function? ( yes or no ) Explain.
No, the input 10 has more than 1 output
The ____________variable is the input.
The ____________ variable is the output.
(fill in the blank)
independent , dependent
f(x)=15x+5
f(3)=?
f(3)=50
Place in order from least to greatest
-20/40 , 9/15 , 5 , -8/10
-8/10 , -20/40 , 9/15 , 5
What is the domain & range of this graph?
D={2,3,5,7,9}
R={1,3,4,5,6}
Function? (yes or no)
No, by the vertical line test
The price of a house depends on its area. (fill in the blank)
Independent:____________
Dependent: __________
area, price
-3x - 5y = 20
Rearrange to slope-intercept form
y = -3/5x -4
40=5(d+1)
d=7
This graph shows how the amount of vegetable oil that Hunter has left is related to the number of cakes that he bakes. Up to how many cakes can Hunter bake in order to have 1 tablespoon of vegetable oil left?
hint: (x-axis = #of cakes) (y-axis = #of tablespoons remaining)
6 cakes
Function? (yes or no)
Anne buys buys used cars at auction for $2000 per car. There is a $150 fee to take part in the auction. (fill in the blank)
Dependent: ___________
Independent: ______________
amount of money (cost) , number of cars purchased
2x-3y=6
Rearrange to slope-intercept form
y=-2/3x+2
Solve for a
(a-5)/2=-5
a= -5
At the start of a snowstorm, it snowed two inches an hour for two hours, then slowed to one inch an hour for an additional hour before stopping. Three hours after the snow stopped, it began to melt at one-half an inch an hour for two hours. Would this graph be continuous or discrete?
Continuous; time never stops
Function? ( Yes or No)
No, the inputs 4 and 5 have more than 1 output
5 pounds of apples costs $7.45
Dependent: __________
Independent: ______________
(fill in the blank)
cost, number of pounds
3x=4(y-5)
Rearrange to slope-intercept form.
y=3/4x+5
f(3)=?
f(3)= 7 1/4