Question

A line passes through the points A(-1,7) and B(1,3). Write an equation of this line.

I am really have hard time doing this help.

Answer 1

y=2x+1

Explanation:

Solve:

`m=(3-7)/(1-(-1)) =(4)/(2) =2\\m=2`

Put in slope-intercept form:

`3=2(1)+b\\3=2+b`

-2 -2

`b=1`

End equation:

`y=2x+1`

Hope this helps! :)

Answer 2

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