Graphs
Tables
Equations
Random
Slope and Proportionality
100
How can you tell if a graph is proportional?
IT TOUCHES THE ORIGIN!!
100
What does the letters "m" and "b" mean in y=mx+b?
m= SLOPE
b= Y-INTERCEPT
100
Is the following represent a proportional or non-proportional function? EXPLAIN
y=-2x
What is Proportional?
*because it only has the SLOPE and no y-intercept*
y-intercept = 0 here
100
D
Because each x-value only has one y-value (or one line).
100
(0,0) represents...
What is the Origin?
200
Is the following proportional or non-proportional?
proportional
200
How can you tell if a table is non-proportional?
The "b" does NOT equal 0.
200
Is the following represent a proportional or non-proportional function? EXPLAIN
y=-3x+1/2
What is non-proportional?
There is a y-intercept of 1/2
b= 1/2
200
identify the y-intercept
y + 5x + 3
What is 3?
200
The slope of this equation is: y = -3x + 6
What is -3?
300
What is the coordinate for the origin?
(0,0)
300
Is the following proportional or non-proportional?
EXPLAIN
Proportional, because the y-intercept is 0
b=0
300
what makes an equation PROPORTIONAL?
When it only includes the slope, or 'a' or 'm' -- there is no y-intercept or 'b'.
y=ax
300
A - the only one to pass the vertical line test
300
The following equation (y = 2x + 8) is......
What is Non-Proportional?
400
Is the following proportional or non-proportional?
non-proportional
400
How can you tell if a graph is proportional??
AFTER PUTTING THE NUMBERS IN THE CALCULATOR:
the y-intercept is 0
OR
b=0
400
Does the following situation describe a proportional or non-proportional relationship?
The total surface area of a cylinder with a radius of 1 unit and height of x units can be represented by
y= 2πx + 2π.
400
Simplify the following equation
2y=14
y=7
400
True or false: The following equation is non-proportional: y = kx
What is false?
500
How can you tell if a graph is non-proportional?
it does NOT touch the origin
500
is the following proportional or non-proportional?
EXPLAIN
Non-proportional because the y-intercept is -5
b= -5
500
Write the following equation.
Explain if its proportional or non-proportional.
The weight in x weeks of a baby that gains 4 pounds per week if the baby’s starting weight is 8 pounds.
500
A festival food and game ticket costs $2 per ticket. The festival also charges a $5 admission fee. What is the y intercept in this situation?
What is the admission fee $5.
500
The following equation (y=3x) is.........
What is proportional?