Question 766969
Since the y-intercept is 3, then (0,3) is another point on the line.


y - y1
------ = slope
x = x1


(0,3) and (-2,1) are two points on the line


1 - 3
------ = slope
-2 - 0


-2
--- = slope
-2


slope = 1


Point is (-2,1) and slope is 1



Point-slope form for the equation of a line is y - y1 = m(x - x1
(x1,y1) are the coordinates of the point
m is the slope



y - 1 = 1[x - (-2)]   {substituted point and slope into point-slope form}
y - 1 = x + 2 {simplified}
y = x + 3 {added 1 to each side}
<br>For more help from me, visit:<br><a href = "http://www.algebrahouse.com/" target = "_blank">www.algebrahouse.com</a><br><br>