Slopes
Forms of Equations
Graphs of Lines
Functions
Independent/Dependent
100
(tie with the winner) What is the general equation for finding a slope from two points?
m = (y2-y1)/(x2-x1)
100
(Daily Triple) How many forms or Linear equations are there?
3
100
(Tie with the winner) What does the graph of a linear equation look like?
a line
100
What is the name of the test for telling if something is a function from graph?
Vertical Lines Test
100
In a general linear equation which variable is the independent?
x
200
What is the slope from slope intercept form?
m
200
What is the general form that can tell us a y intercept and a slope?
Slope - intercept form
200
Where would I start graphing the following equation?
y = 3x - 5
-5 on the y axis
200
Is the following relation a function? Why or Why not?
{(1,3),(9,7),(1,3)}
Yes. Even though there is a set of matching x's, they have the same y so it is the same point.
200
What is slope in terms of Independent and Dependent variables?
dep/ind
300
Find the slope of a line that passes through the following points {(1,2),(3,3),(5,4)}.
m = 1/2
300
What form is the following equation in?
y -5 =3(x-3)
point slope
300
How do you graph the following equation?
y-2 = 2(x-1)
Put into slope intercept form and start at the intercept of 0 and rise 2 and go over 1. or
Use the point (1,2) and rise 2 and run 1.
300
Are all linear equations functions? Explain.
All except vertical lines. x=n
300
(Daily Triple) What is the independent and dependent variable for the following scenario?
Suppose that the water level of a river is 28 feet and that it is receding at a rate of .2 feet per day. Write an equation for the water level, L, after d days. In how many days will the water level be 26 feet?
Dep =feet
Ind = days
400
What is the slope from the following scenario.
5 people die each year from shark attacks.
-5 people/year
400
(daily double) What point was used to make the following equation?
y-6 = 2(x+8)
(-8,6)
400
How many points can be on a single line?
infinite
400
(Daily Double) Is the following picture a function?Explain.
Yes it passes the vertical line test.
400
Why is time almost always the Independent variable?
Time is independent in life. It keeps moving. Time is something you get to choose how to spend and then life gives you a consequence?
500
(Daily Double) What is the slope of a horizontal line?
m = 0
500
Use the following information to make an equation in standard form.
m = 2 and the line runs through the point (4,1)
-2x+y = -7 or 2x-y = 7
500
What is the equation for the following graph?
y = (-2)x + 5
500
Is y < 3x+5 a function?Explain.
No because for each point you plug in you can have multiple answers.
Bonus Question: If an engineer was using this equation to explain pressure on a nail board. What would y represent and what would x represent?
500
Create an independent/dependent variable scenario from your own life.
Getting paid depends on my choice to come to work and give my best.