Functions
Is the relation (-1,6) (4,2) (7,2) a function?
Yes
The slope of the line that passes through the points (3,-4) and (7,2).
What is 3/2?
3x2 - 6x = 0
What is x = 0, 2
What is the standard form of an equation?
Ax+By=C
f(-2) when f(x) = 6x - 4.
What is -16?
The slope of the line parallel to the line y = -3x - 7.
What is -3?
x2 - 25 = 0
What is x = 5, -5
Find the zeros of the function
f(x) = 2x/(x2 - 4)
What is x=0 (0,0)
(f-g)(x) when f(x) = 3x and g(x) = x + 5
What is 2x - 5?
The equation of the line that passes through the points (0,2) and (3,-2).
What is y = -4/3x + 2?
x2 + 2x - 24 = 0
What is x = -6, 4?
One machine produces keyboards in 30 minutes. An older machine takes 40 minutes. How long will it take the machines to work together to make one batch of keyboards.
1 5/7 hours
Find the domain of
f(x) = 2x/(x2 - 4)
What is all real numbers except 2 and -2
Solve the system of equations:
x+2y = 8
2x+3y = 10
x=-4, y=6
3x2+2x-1 = 0
What is x = 1/3, -1
Solve for x:
x/(x+4)=4/(x+2)
x=2
(-2 is extraneous)