Every one cup of sugar uses _____ cups of flour?
1.5 cups
What is the equation for proportional relationships?
y=kx
Why is this graph not proportional?
It's not going through the origin (0,0)
Are proportional graphs straight or curved?
straight
What is an additive inverse?
When the sum of a number and it's inverse equal 0.
Write the equation for the following table.
y=(1/2)x
Write the equation of the relationship of two quantities if you know the constant of proportionality is 5.
y=5x
Why is this graph proportional?
There is a straight line that goes through the origin (0,0)
Do proportional graphs form a line or an x shape?
a line
Define integer.
any whole number and it's opposite
Is the following ratio table proportional?
No
What equation represents the graph?
y=0.66x
What is the constant of proportionality?
6
What special point must all proportional graphs go through?
the origin or (0,0)
-5+12-7
0
Complete the proportional table by writing the missing number.
171
If water used varies directly with time, what is the equation of the relationship?
y=5x
What is the constant of Proportionality?
1/6
How do you know a graph is proportional?
When the points form a straight line through the origin.
Hannah climbs up 12 flights of stairs. Then, she goes down 5 flights of stairs. How many flights above her starting point is she now?
12+(-5)=7
4 liters
132 km
Becca completes 42 math problems in 12 minutes. Write an equation to represent how long each problem takes.
y=3.5x
What is the constant of proportionality?
40
Can a proportional graph be a straight vertical line?
No
Football yard: Write an addition expression.
A player gains 15 yards, then looses 7 yards.
15+(-7)