A line contains the points (3,-4) and (0,2). What is the equation of this line in slope intercept form?
A) y=2x+2
B) y= -2x+2
C) y= -x + 1
D) y= x +1

Respuesta :

Answer:

y = -2x + 2

Step-by-step explanation:

First, find the slope - the slope formula is [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}  }[/tex]. If you plug in the coordinates, you get:

[tex]\frac{2-(-4}{0-3}=\frac{6}{-3} =-2[/tex]

So you plug the slope into the slope-intercept equation:

y = -2x + b

Then to find b, you plug in one of the coordinates (I'll use (0,2)):

2 = -2(0) + b

2 = b

So therefore:

y = -2x + 2