Functions
evaluate f(x) = 2x + 3 for x = 4
what is 11?
Solve 2x + 3 = 7
What is x = 2?
solve 3x - 4 < 5
what is x < 3 ?
Find the median of the data set
1,9,4,5,4,6,7,2,9
What is 5?
the x value in the system
2x + y = 5 and x - y = 1
what is x = 2?
Determine the domain of (4,2),(-3,6),(1,-5),(6,3)
A. {2,6,-5,3}
B. {-3,1,4,6}
C. {4,6,-5,3}
D. {all real numbers}
what is B? { -3, 1, 4, 6 }
the y intercept of y = 3x + 4
What is 4?
Solve x + 2 <=6
what is x<=4 ?
What is skewed left?
is (8,5) the solution of the system
5x - 4y = 20
3y = 2x + 1
What is no?
g(t) = t^2 + 6t +9 Evaluate g(-3)
what is 0
the x intercept of 5x - 2y = 10
What is 2?
Tell what is meant by an inequality being open
the endpoint cannot be used
Find the IQR of the data set
1,2,4,4,5,6,7,9,9
What is 5?
Solve the system
2x + 9y = 16
5x = 1 - 3y
What is (-1, 2)?
Do I have a function? Explain why / why not.
(1,2) (3,4) (5,6) (7,8) (1,9)
Not a function; the 1 repeats
is the point (1, 3) a solution of y = 4x - 1
yes
the endpoint/point can be used
Describe the correlation of data that has a correlation of -.97
What is strong negative?
Is the point (3,2) a part of the solution set for the system. Explain why/why not.
y > x - 2
y <= 2x + 2
yes. It is in the overlapped shaded region.
What is the domain of f(x) = 9 - x^2 ?
A. y >= 9
B. all real numbers
C. x is between -3 and x
D. x <= 9
what is B? all real numbers
solve the equation -2(x + 3) = -5x + 3x + 8
what is no solution
Is -6 a part of the solution set for -2x +4 > 8? Explain why / why not.
yes. The graph goes in that direction.
Describe where the maximum is on a box and whisker plot
the whisker on the right / largest value
Is the point ( 3,-2) a part of the solution set? Explain why/why not.
x + y < 2
y > -5x + 2
No. It is not in the overlapped shaded region.