What is the formula for finding missing angles of a triangle

Now that you are certain all triangles have interior angles adding to 180° , you can quickly calculate the missing measurement. You can do this one of two ways: Subtract the two known angles from 180° . Plug the two angles into the formula and use algebra: a + b + c = 180°

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value