Answer:
It is (-4,3)
Step-by-step explanation:
Answer:

Step-by-step explanation:
The reference angle is an acute angle that angle in standard position makes with the positive x-axis.
The given angle in radians is

This angle is already acute and hence it is itself a reference angle.
The reference angle of any angle in the first quadrant is the same angle.
A I think I don’t know cause the formula is y=Mx+b is a slope formula so he have to be right