Linear Functions
In the equation y = 3x+5, the 5 is the...
What is y-intercept
What is the y intercept of the quadratic function?
x2 - 2x + 5 = 0
What is 5?
Evaluate the expression when x = -2 :
x2+4x+6
What is 2?
Which correlation coefficient represents the strongest linear relationship?
a) 0.5 b) 0.25 c) 0.85 d) -0.95
What is choice d, -0.95?
Which system of equations can be used to model the following scenarios:
There are 50 animals. Some of the animals have 2 legs and the rest of them have 4 legs. In total there are 172 legs.
What is x+y = 50 and 2x+4y=172 ?
Solve for 'a' in the equation in terms of h, b, and r.
h = a • b + r
What is a = (h-r)/b
Factor the quadratic y = x2 - 6x + 8
What is (x-2)(x-4)?
What is the vertex point of the equation
f(x) = - | x + 9|
What is (-9,0)?
Which relationship can best be described as causal?
1) The alarm goes off and the sun rises.
2) The car is moving slowly and the driver is
singing.
3) The snow is falling and the stores run out of
snow shovels.
4) The birds are chirping and the rain is coming
down.
What is 3) The snow is falling and the stores run out of snow shovels.
Amelia buys an empty sticker album and some sticker sheets. The equation that relates the total cost for the empty sticker album and 'N' sticker sheets is P= 0.75N + 300. What does the number 0.75 in the equation represent?
What is "the cost of each sticker sheet"
Determine the solution to the system of equations
5x - 4y = -3
3x + 2y = 7
What is (1,2)?
The axis of symmetry for the quadratic function:
f(x) = x2+4x+6
What is x = -2?
How does the graph of f(x) = | x - 5 |+ 2 shift from the parent function f(x) = |x|?
What is it shifted to the right 5 and up 2
What is the approximate standard deviation for the set of data:
-4,-3,0,8,9?
What is 5?
After Allie takes some medicine, each hour the number of milligrams of medicine (M) remaining in her body after t minutes can be modeled with the equation M=200(1-0.27)t. What is the rate of decay?
What is 27%
The value of Tony's investment was $1140 on January 1st. On this date three years later, his investment was worth $1824. What was the average rate of change per year?
What is $228/year?
Factor 4x2-36
What is (2x+6)(2x-6)?
What is the smallest integer that satisfies the equation -6x < -18?
What is 4?
How to calculate the interquartile range
What is Q3- Q1
The height of a projectile thrown in the air can be modeled with the equation h= -16t^2 + 48t + 160, where t is the number of seconds. At 1.5 seconds, how high will the projectile reach?
What is 196 feet?
The explicit equation of the arithmetic sequence below:
5, 8, 11, 14...
What is an=5+(n-1)(3) or an =3n+2?
The solutions to the following quadratic:
3x2-10x-8
What is x = -2/3 and x = 4?
Find when f(x) = 2|4x+2| crosses the x-axis.
What is at x= -.05
Rosario and Enrique are in the same mathematics class. On the first five tests, Rosario received scores of 78, 77, 64, 86, and 70. Enrique received scores of 90, 61, 79, 73, and 87.
How much higher was Enrique’s average than Rosario’s average?
What is 3 points?
There are 900 birds in a forest. Each year the bird population increases by 12%. About how many birds will there be in 4 years?
What is 1416 birds?