Graphs
Equations
Scale Drawings
Tables
Situations
100
is this graph proportional?
proportional!
- 0,0
- straight
100
y = 7x +2
is the equation above proportional
not proportional
y = cop x
NOT cop x +2
100
Do the following figures appear to be scale drawings?
Yes! it is not stretched, but proportional
100
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
100
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)!!
150
What is the CoP of the graph?
7/2 = 3.5
150
What is the equation of the graph?
y=4.5x
150
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
150
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
150
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
200
Interpret the meaning of point B in the graph.
In 5 minutes, 52 calories are burned.
200
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
200
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
200
Calculate the depth of the water at 9 minutes.
9 min x 0.6 cm/min =
5.4 cm
200
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