curl --request POST \
  --url https://api.iotools.cloud/v1/tool/x-y-intercept-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "a": "2",
  "b": "3",
  "c": "-6"
}
'

{
  "tool": "x-y-intercept-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "equation": "2x + 3y - 6 = 0",
    "classification": "Oblique (slanted) line",
    "xIntercept": "(3, 0)",
    "yIntercept": "(0, 2)",
    "slope": "-0.666667",
    "steps": "Equation: 2x + 3y - 6 = 0\nx-intercept (set y = 0): ax + c = 0 → x = -c/a = -(-6)/2 = 3\ny-intercept (set x = 0): by + c = 0 → y = -c/b = -(-6)/3 = 2\nSlope: m = -a/b = -(2)/3 = -0.666667"
  },
  "credits_used": 5,
  "credits_remaining": null
}