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21 votes
21 votes
Write an equation for the line who passes through (-3,1) and (1,3)

User Debarati
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2 Answers

18 votes
18 votes

Answer:

Step-by-step explanation:

y= r/2 + 3/4

User Greysteil
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3.1k points
9 votes
9 votes

Given:

Two points are given as (-3,1) and (1,3)


\begin{gathered} (x_1,y_1)=\left(-3,1\right) \\ (x_2,y_2)=\left(1,3\right) \end{gathered}

Required:

We want to write an equation which passes through the given points

Step-by-step explanation:

First we need to find the slope of the required line


m=(y_2-y_1)/(x_2-x_1)=(3-1)/(1-(-3))=(2)/(4)=(1)/(2)

The equation of is


\begin{gathered} y-y_1=m(x-x_1) \\ y-1=(x)/(2)+(3)/(2) \\ \\ y=(x)/(2)+(5)/(2) \end{gathered}

Final answer:


y=(x)/(2)+(5)/(2)

User Mwillbanks
by
3.1k points