# Line slope calculator 7x+y=15

**Straight line given by points A[1; 8] and B[2; 1]**

## Calculation:

**Slope-intercept form of line:**y = -7x+15

**Canonical form of the line equation:**7x+y-15 = 0

**Parametric form of the line equation:**

x = t+1

y = -7t+8 ; t ∈ R

**Slope:**m = -7

**Slope angle of line: φ =**-81°52'12″ = -1.4289 rad

**X intercept:**x

_{0}= 2.1429

**Y intercept:**y

_{0}= q = 15

**Distance line from the origin:**d

_{0}= 2.1213

**The length of the segment AB: |AB| =**7.0711

**Vector: AB =**(1; -7)

**Normal vector: n =**(7; 1)

**Midpoint of the segment AB: M =**[1.5; 4.5]

**Perpendicular Bisector equation:**x-7y+30 = 0

**Vector OA = (1; 8) ; |OA| = 8.0623**

**Vector OB = (2; 1) ; |OB| = 2.2361**

**Scalar product OA .OB = 10**

**Angle ∠ AOB = 56°18'36″ = 0.9828 rad**