is this graph proportional?
proportional!
- 0,0
- straight
y = 7x +2
is the equation above proportional
not proportional
y = cop x
NOT cop x +2
Do the following figures appear to be scale drawings?
Yes! it is not stretched, but proportional
Is the table below proportional?
x y
2 4
6 8
12 14
Not proportional
the cop from 2 to 4 is x2.
the cop from 6 to 8 is 4/3
On the Santa Cruz Boardwalk field trip, each student spends $10 on lunch as well as additional $1 for every carnival game they play.
Mr. Kirk believes the following situation is proportional because for every game they play, students pay an additional dollar. Is he correct?
No!
It does not start at (0,0)!!
What is the CoP of the graph?
7/2 = 3.5
What is the equation of the graph?
y=4.5x
Triangle WVX might be a scale drawing of TSU. If so what is the scale factor relating the two?
The scale factor from TSU to WVX is 1/2.
18 ÷ 2 = 9
8 ÷ 2 = 4
12 ÷ 2 = 6
Find the CoP of the table and explain it with the context of the units used.
y/x
$3/2 tickets
$1.5 per ticket
Car A uses 30 gallons of gasoline to travel 147 miles. Car B uses 25 ⅕ gallons of gasoline to travel 306 miles.
Fill in the blank to make a true statement.
Car ___ uses less gasoline per mile.
B uses less gas to go twice the distance.
w/ 1 gallon Car A travels ~12.1 mi, Car B travels 4.9 mi
Interpret the meaning of point B in the graph.
In 5 minutes, 52 calories are burned.
At the nike store, the equation s = 0.5z describes the relationship between shoes made (s) and zippers made (z). If the store reports it has made 200 shoes today, how many zippers did it make?
200 = 0.5z
400 = z
What is the value of the missing side? (answer with a fraction)
y/x = 30/10 = 3
cop = 3
y = copx
20 = 3x
20/3 = x = 6 2/3 cm
Calculate the depth of the water at 9 minutes.
9 min x 0.6 cm/min =
5.4 cm
Ariana runs 3/5 miles in the same time it takes Eduardo to run 2/3. When Ariana has run 1 mile how far has Eduardo ran?
9/10ths of a mile