Question

m= -1 and point (2,-1) lies on the line write an equation

Answer 1

The required equation of line is:

$y=-x+1$

Step-by-step explanation:

Given

m=-1

And point (2,-1)

The general form of slope intercept form of equation of line is:

$y=mx+b$

Putting the value of the slope

$y=-(1)(x)+b\\y=-x+b$

To find the value of b, putting (2,-1) in the equation

$-1=-(2)+b\\-1=-2+b\\b = 2-1\\b=1$

Putting the values of b and m in equation

$y=-x+1$

The required equation of line is:

$y=-x+1$

Keywords: Equation of line

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