A line contains the points (4,2) and (0,-1). What is the equation of the line?

asked Sep 7, 2021 71.7k views

2 votes

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2 votes

the equation of the line is

y=kx+b

let's create a system of equations

$\left \{ {{2=4k+b} \atop {-1=0k+b}} \right. \\b=-1\\\\2=4x-1\\4k=3\\k=0,75$

so, the equation of the line is

y=0,75x-1

P.S. Hello from Russia

Tomazy answered Sep 13, 2021

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