Given (3, 4) and (9, 8)

calculate 8 items:

Calculate the slope and point-slope form:

Slope (m)  =	y2 - y1
	x2 - x1

Slope (m)  =	8 - 4
	9 - 3

Slope (m)  =	4
	6

GCF Calculation

Reduce numerator and denominator by the (GCF) of 4

Slope = (4/4)/(6/4)

Slope  =	1
	1.5

Calculate the point-slope form :

y - y1 = m(x - x1)

y - 4 = 2/3(x - 3)

Calculate the line equation

Standard equation of a line is y = mx + b
where m is our slope
x and y are points on the line
b is a constant.

Rearrange the equation to solve for b
we get b = y - mx.
Use (3, 4) and the slope (m) = 2/3

b = 4 - (2/3 * 3)

b = 4 - (3/1.5)

b  =	6
	1.5

b  =	6
	3

Solve for b

This fraction is not reduced. Using our GCF Calculator, we see that the top and bottom of the fraction can be reduced by 6

Our reduced fraction is:

Build standard line equation

y = 2/3x + 2

Distance between the 2 points

D = Square Root((x2 - x1)2 + (y2 - y1)2)

D = Square Root((9 - 3)2 + (8 - 4)2)

D = Square Root((62 + 42))

D = √(36 + 16)

D = √52

D = 7.2111

Midpoint between the 2 points

Midpoint =

Midpoint =

Midpoint =

Midpoint = (6, 6)

Form a right triangle

Plot a 3rd point (9,4)

Our first triangle side = 9 - 3 = 6

Our second triangle side = 8 - 4 = 4

Using the slope we calculated
Tan(Angle1) = 0.66666666666667

Angle1 = Atan(0.66666666666667)

Angle1 = 33.6901°

Since we have a right triangle
We only have 90° left
Angle2 = 90 - 33.6901° = 56.3099

Calculate the y intercept of our line

The y intercept is found by
Setting x = 0 in y = 2/3x + 2

y = 2/3(0) + 2

y = 2

Find the parametric equations for the line

Parametric equations are written as
(x,y) = (x0,y0) + t(b,-a)

Plugging in our numbers, we get

(x,y) = (3,4) + t(9 - 3,8 - 4)

(x,y) = (3,4) + t(6,4)

x = 3 + 6t

y = 4 + 4t

Calculate Symmetric Equations:

Plugging in our numbers, we get:

Plot these points on the Cartesian Graph:

Final Answers

Slope = 1/1.5 or 0.66666666666667
Slope Intercept = y = 2/3x + 2
Distance Between Points = 7.2111
Midpoint = (6, 6)
Angle 1 = 33.6901
Angle 2 = 56.3099
Y-intercept = 2

What is the Answer?

Slope = 1/1.5 or 0.66666666666667
Slope Intercept = y = 2/3x + 2
Distance Between Points = 7.2111
Midpoint = (6, 6)
Angle 1 = 33.6901
Angle 2 = 56.3099
Y-intercept = 2

How does the Line Equation-Slope-Distance-Midpoint-Y intercept Calculator work?

Free Line Equation-Slope-Distance-Midpoint-Y intercept Calculator - Enter 2 points, and this calculates the following:
* Slope of the line (rise over run) and the line equation y = mx + b that joins the 2 points
* Midpoint of the two points
* Distance between the 2 points
* 2 remaining angles of the rignt triangle formed by the 2 points
* y intercept of the line equation
* Point-Slope Form
* Parametric Equations and Symmetric Equations

Or, if you are given a point on a line and the slope of the line including that point, this calculates the equation of that line and the y intercept of that line equation, and point-slope form.

Also allows for the entry of m and b to form the line equation
This calculator has 7 inputs.

What 6 formulas are used for the Line Equation-Slope-Distance-Midpoint-Y intercept Calculator?

m = (y2 - y1) / (x2 - x1)
y = mx + b
Distance = Square Root((x2 - x1)2 + (y2 - y1)2)
Parametric equations are written in the form (x,y) = (x0,y0) + t(b,-a)
Midpoint = ((x2 + x1)/2, (y2 + y1)/2)

For more math formulas, check out our Formula Dossier

What 9 concepts are covered in the Line Equation-Slope-Distance-Midpoint-Y intercept Calculator?

anglethe figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. distanceinterval between two points in time
d = rtline equationparametric equationdefines a group of quantities as functions of one or more independent variables called parameters.point slope formshow you how to find the equation of a line from a point on that line and the line's slope.
y - y1 = m(x - x1)slopeChange in y over change in xsymmetric equationsan equation that presents the two variables x and y in relationship to the x-intercept a and the y-intercept b of this line represented in a Cartesian planey-interceptA point on the graph crossing the y-axis

Example calculations for the Line Equation-Slope-Distance-Midpoint-Y intercept Calculator

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