A graph with a dotted line running through the points (-4, 0) and (0, 6) shaded above the origin.
Start with

Separate the variables:

Integrate both parts:

Which implies

Solving for y:

Fix the additive constant imposing the condition:

So, the solution is

The answer in fraction form is exactly 1/13
The approximate answer in decimal form is 0.076923
To get this answer, note how there are four cards that have "2" on them. This is out of 52 total. So we divide the values: 4/52 = 1/13. Don't forget to fully reduce as much as possible.
To go from 1/13 to 0.076923, you would use a calculator or long division
5 centimetres not 8 centimeters not 2 centimetres not 9 centimeteres