Slope intercept form is:
y=mx+b, where m=slope and b=y-intercept (value of y when x=0)
m=(y2-y1)/(x2-x1) "change in x divided by change in y"
m=(3--3)/(0--3)
m=6/3
m=2
And we can see the point (0, 3) so we know b=3 thus our line is:
y=2x+3
Now point slope form is y-y1=m(x-x1), where m is the slope and (x1,y1) is any point on the line...we know slope is 2 and we can use (-3,-3) for the point so:
y+3=2(x+3)
So it is answer A.
