equations of proportional relationships
identifying proportional relationships
Circumference of a Circle
Area of a Circle
Area or Circumference of Partial Circles
100
Is this equation proportional? y= 3x
If so what is the constant of proportionality? (m)
Yes
m=3
100
Is this graph proportional?
YES
100
The diameter of the circle is 12 cm and Pi equals 3.14, find the circumference
37.68 cm
100
The radius of the circle is 8 cm and Pi equals 3.14, find the area of the circle
200.96 sq cm
100
Find the circumference of the arc
21.98 units
200
Is this equation proportional? If so what is the constant of proportionality? (m=)
y= 4x + 10
Not proportional
200
Is the graph a proportional relationship? Why?
NO
Does not go through the origin
200
The diameter of the circle is 20 in and Pi equals 3.14, find the circumference
62.80 in
200
The radius of the circle is 2 m and Pi equals 3.14, find the area of the circle
12.56 sq. m
200
Find the circumference of the arc
12.56 units
300
Kaylee loves to read and discuss books, so she joined a book club. The first book she read as a member of the club was a novel set in ancient Rome. Kaylee read the novel at a rate of 10 pages per hour.
There is a proportional relationship between the time Kaylee has spent reading the novel (in hours), x. and the number of pages she has read, y. Write the equation showing the relationship between the hours spent reading (x) and the pages read (y)
y=10x
300
Is the table proportional?
No
300
The radius of the circle is 9 cm and Pi equals 3.14, find the circumference
56.52 cm
300
The diameter of the circle is 20 cm and Pi equals 3.14, find the area of the circle
314 sq cm
300
Find the area of the half-circle
76.93 sq. units
400
Write an equation for the table given the table is proportional.
Y= 3/2 x
400
Is the table proportional?
Yes it is proportional
400
The radius of the circle is 2.5 m and Pi equals 3.14, find the circumference
15.7 m
400
The diameter of the circle is 10 sq in and Pi equals 3.14, find the area of the circle
78.5 sq in
400
Find the area of the quarter-circle
100.48 sq units