Question

Time (hours) Number of Bricks

2 100
4 200
6 300
8 400

The time it takes a brick layer to lay bricks varies directly with the number of bricks. The brick layer's data is shown in the table. If x = time, and y = the number of bricks, which equation models the brick layer's direct variation?

Answer 1

y=50x

Explanation:

For every additional 2 hours (x), there are 100 bricks laid.

This means the slope is 50 (100/2)(200/4)etc.

50*2=100

50*4=200

50*6=300

50*8=400