Point-slope is the general form y-y₁=m(x-x₁) for linear equations. It emphasizes the slope of the line and a point on the line (that is not the y-intercept).
Answer is Ax+By=C. ... A, B, C are integers (positive or negative whole numbers)
See how many times 30 fits into 383. 30 x 12 = 360, 30 x 13 = 390 therefore, 30 fits into 383 twelve times. 383 - 360 = 23 you'll have a remainder of 23