Solving Equations
Algebra: Is this a function: {(1, 2), (2, 3), (2, 4)}. AND why?
No
Find the slope: 2(3x - y) = -10
3
Which value is L1?
The x-value
What is the slope formula?
m= (y2-y1) / (x2-x1)
Function: {(3, 5), (4, 6), (5, 7)}. What do the y values {5, 6, and 7} represent?
Range
What is the slope of the following equation:
2x + 2y = 8
slope = -1
Which buttons do you use to get to the screen to input data in the calculator?
Stat-> enter
True or False: A vertical line is a function
false
Solve: 21 + x = 2(x - 6)
x = 33
What is the equation of a line in slope intercept form
y= mx + b
Solve: (3 - 3x)/7 = 6
x = -13
What variable represents the correlation coefficent?
r
What shape does the graph of a quadratic equation make
U Shape
Algebra: Solve for a: ax + b = c
Algebra: a = (c - b)/x
Write the following equation in slope-intercept form: 5(x + 2y) = 20
y = -1/2x + 2
In the calc menu how do you find the equation? What is the equation?
4: LinReg
y=ax+b
What is the quadratic Formula?
x=(-b ± √b^2 - 4ac) / 2a
Algebra: simplify: 3(6wd - 3) + wd3
Algebra: 21wd - 9
Solve the following quadratic equation by factoring. x2 - 6x - 27 = 0
x = 9 x = -3
What's the slope of the line passing through (3,9) (5,4)
slope: -5/2
In order for the correlation coefficient to be strong what does the number have to be?
Closer to -1 or 1.
Use the Zero Product Property to solve the following quadratic equation. (x - 7)(x + 2) = 0
x=7,x=-2