I hope this makes sense!!!!
Equation of a line in slope-intercept form is y = mx + b
If it has a slope of 1/2, you set m = 1/2. If it has a y-int at the origin, you set b = 0
Put it all together:
y = 1/2x + 0
or
y = 1/2x
The required numbers are 22,24,26.