Question 823824: Question 1: the following equation defines a function of x. F(x)=-2x+3. If (6,n) is an element of the function, what is the value of n?
Question 2: the ordered pairs in the sets shown below are the form (x,y). In which set of ordered pairs is y a function of x?
A. {(-3,4),(1,-9),(1,4)}
B. {(0,-5),(0,4),(0,5)}
C. {(1,-1),(2,-1),(3,-3)}
D. {(0,1),(1,-1),(1,0)}
Question 3: the polygon pictured is made up of a rectangle and a right triangle. The formula for the area of the polygon is given below. A=1/2bh+hL. Which equation correctly expresses b in terms of a, h, and L?
A. b=2(a-hL)/h
B. b=h/2a-hL
C. b=a/h(2+L)
D. b=2ah-L
Question 4: each of the following tables contains elements of an (x,y) relationship. Which table contains four points that cannot lie on the graph of a function of x?
A. x:0,2,3,4. y:-1,-2,-3,-4
B. x:-1,-2,3,4. y:2,4,6,8
C. x:1,2,3,2. y:4,2,2,4
D. x:0,1,5,6. y:5,9,2,-1
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Question 1: the following equation defines a function of x.
F(x)=-2x+3. If (6,n) is an element of the function, what is the value of n?
Ans: -2*6+3 = -12+3 = -9
-------------------------------
Question 2: the ordered pairs in the sets shown below are the form (x,y). In which set of ordered pairs is y a function of x?
A. {(-3,4),(1,-9),(1,4)}:: no
------
B. {(0,-5),(0,4),(0,5)}:: no
-----
C. {(1,-1),(2,-1),(3,-3)}:: yes
-----
D. {(0,1),(1,-1),(1,0)}:: no
===========================================
Question 3: the polygon pictured is made up of a rectangle and a right triangle. The formula for the area of the polygon is given below. A=1/2bh+hL. Which equation correctly expresses b in terms of a, h, and L?
A. b=2(a-hL)/h
B. b=h/2a-hL
C. b=a/h(2+L)
D. b=2ah-L
Comment: Can't answer that without seeing the figure
-------------------------------------------------------------
Question 4: each of the following tables contains elements of an (x,y) relationship. Which table contains four points that cannot lie on the graph of a function of x?
A. x:0,2,3,4. y:-1,-2,-3,-4
B. x:-1,-2,3,4. y:2,4,6,8
C. x:1,2,3,2. y:4,2,2,4:: not a function
D. x:0,1,5,6. y:5,9,2,-1
===========================
Cheers,
Stan H.
=========
|
|
|
