We know that a linear pattern just means that we add (or subtract) the same amount each time.
Pick a starting point
3
Pick an amount to add
4
3+4 = 7
7+4 = 11
11+4 = 15
15+4 = 19
The 5 numbers are 3,7,11,15,19
They are in a linear pattern because it increases by the same amount each time.