8

function validityChecker(x1, y1, x2, y2) {
    if (Number.isInteger(Math.sqrt((0 - x1) * (0 - x1) + (0 - y1) * (0 - y1)))) {
        console.log(`{${x1}, ${y1}} to {0, 0} is valid`);
    } else {
        console.log(`{${x1 }, ${y1}} to {0, 0} is invalid`);
    }

    if (Number.isInteger(Math.sqrt((0 - x2) * (0 - x2) + (0 - y2) * (0 - y2)))) {
        console.log(`{${x2}, ${y2}} to {0, 0} is valid`);
    } else {
        console.log(`{${x2}, ${y2}} to {0, 0} is invalid`);
    }

    if (Number.isInteger(Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1)))) {
        console.log(`{${x1}, ${y1}} to {${x2}, ${y2}} is valid`);
    } else {
        console.log(`{${x1}, ${y1}} to {${x2}, ${y2}} is invalid`);
    }
}