The numbers below are the income limits for 138% of the Federal Poverty Level Chart. The is the line that separates Medicaid from the plans on the marketplace with the ACA. If your gross income is below these numbers you will most likely be eligible for medicaid. If its above, you may be able to get a tax credit to help paying for health insurance through the ACA.
Medicaid has requirements other than income and they will ultimately determine whether you qualify or not.
Link to full chart – 2019 FPL chart and FAMIS Income Limits
This chart below is the income limits for a child to qualify for Medicaid.