What would be the formula (in terms of (a,b)) if you were to reflect (a,b) across y=3x+5. Please explain too! Thank you!
Hey Jammix,
Hint: Try calculating the angle that is made with your point (a,b) and the line y=3x+5 and create a rotation matrix that rotates the (a,b) point -2*theta where theta refers to a signed angle where positive values means (a,b) is above the line and negative means (a,b) is below the line.