Y-Intercept
Slope
Independent/Dependent
Different Representations
Writing Equations
100
What is the y-intercept?
-4
100
What is the slope in this equation?
y=3x-5
3
100
Which variable represents the independent variable, X or Y?
X
100
True or False: A line is made up on infinite points.
True
100
Write an equation with a slope of 3 and a y-intercept of 6
y=3x+6
200
What is the y-intercept in this equation:
-4
200
What is the slope of this line?
2/3
200
Mira earns $25.00 for every hour that she babysits her cousins.
E= 25h
Which represents the independent variable, hours or earnings?
Hours...Earnings DEPENDS on Hours
200
What is the slope and y-intercept in this equation?
y = 2x + 4
Slope is 2, y-intercept is 4
200
Write an equation:
m=-3
b=10
y=-3x+10
300
What is the y-intercept in the following equation?
y=5x
0
300
Find the slope
1/2
300
The 8th grade class raises money by washing cars. They earn $15 for every car they wash
E = 15c
What is the DEPENDENT Variable?
Earnings, because it depends on how many cars
300
Write an equation to match the scenario:
I can run 3 mph!
y=3x
300
The gas is pumped at 5 gallons per minute.
Write an equation to show this.
y=5x
400
What is the y-intercept in this scenario?
A ten gallon tank is being drained at a rate of 2 liters per minute.
10
400
A vertical line has what type of slope?
Undefined
400
Which variable can we manipulate by choosing numbers?
Independent Variable
400
Are these the same equations?
y= -2/3x-1
y=1-2/3x
No
400
y=1/3x-5
500
What does the y-intercept represent in a real world scenario?
The beginning point
500
For every 10 days, I get 100 new followers.
What is the rate of change?
10
500
Pizza Pies charges $12 for a medium pizza and an additional $0.50 for each topping.
C = 0.5t + 12
What is the independent variable?
Toppings. The more toppings I add, the more it will cost.
500
Does this equation represent the following scenario?
Kaylee is saving money for movie tickets. She currently has $2 saved. She will add 3 dollars to the account each week.
y=2x+3
No
500
y=-5/2x+1