#include <iostream>
using namespace std;
int main() {
float k, c; float x, y;
cin >> k >> c; x = 0.1;
y = k* x + c; cout << "x = " << x <<
": y = " << y << "\n";
x = 1; y = k * x + c;
cout << "x = " << x << ": y = " << y << "\n"; x = 5;
y = k * x + c;
cout << "x = " << x << ": y = " << y << "\n";
}
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