Question 81584
Use the formula for a slope:
Slope=m={{{((y1-y2)/(x1-x2))}}}
Use the formula for a slope:
Slope=m={{{((4-0)/((-2)-6))}}} [plug-in the values and solve]
Slope=m={{{((4)/(-8))}}}
Slope=m={{{((1)/(-2))}}} 
or 
Slope=m={{{((-1)/(2))}}}
.
Next, use the slope-intercept equation of a line: y=mx+b
y=mx+b [plug-in the values and solve for the b-term]
4=(-1/2)(-2)+b
4=1+b
4-1=b
3=b
.
Plug the slope and intercept into the formula
y=mx+b
y=-1/2x+3