Line slope calculator 4x+9y=72
Straight line given by points A[0; 8] and B[9; 4]
Calculation:
Slope: m = -0.4444Slope-intercept form of line: y = -0.4444x+8
Canonical form of the line equation: 4x+9y-72 = 0
Parametric form of the line equation:
x = 9t
y = -4t+8 ; t ∈ R
Slope angle of line: φ = -23°57'45″ = -0.4182 rad
X intercept: x0 = 18
Y intercept: y0 = q = 8
Distance line from the origin: d0 = 7.3105
The length of the segment AB: |AB| = 9.8489
Vector: AB = (9; -4)
Normal vector: n = (4; 9)
Midpoint of the segment AB: M = [4.5; 6]
Perpendicular Bisector equation: 9x-4y-16.5 = 0
Vector OA = (0; 8) ; |OA| = 8
Vector OB = (9; 4) ; |OB| = 9.8489
Scalar product OA .OB = 32
Angle ∠ AOB = 66°2'15″ = 1.1526 rad