#1
Which of the following is an example of direct variation?
#2
If y is inversely proportional to x and y = 12 when x = 4, what is the value of y when x = 8?
#3
If a rectangle has sides in the ratio 3:4, and the perimeter is 28 units, what is the length of the longer side?
#4
If the scale factor of two similar triangles is 1:3, and the area of the smaller triangle is 12 square units, what is the area of the larger triangle?
#5
If the length of a rectangle is doubled, and the width is tripled, how does the area of the rectangle change?
#6
In a right-angled triangle, if the lengths of the legs are 5 units and 12 units, what is the length of the hypotenuse?
#7
If the scale factor between two similar rectangles is 1:2, and the area of the smaller rectangle is 36 square units, what is the area of the larger rectangle?
#8
The volume of a cube is 125 cubic units. What is the length of each side?
#9
If the price of 3 books is $24, what is the cost of 6 books if the prices are in direct proportion?
#10
The speed of a car is directly proportional to the distance it travels. If a car travels 120 miles in 2 hours, how far will it travel in 5 hours?
#11
If the base of a rectangle is increased by 20% and the height is decreased by 10%, how does the area of the rectangle change?
#12