Answer: 
Explanation:
In order to find the equation of a line, you must first find the slope and y-intercept point. 
Remember, the equation for a line is.
y = mx+b
m = slope
b = y-intercept 
To find slope
m = y2-y1/x2-x1
x1 , y1 x2, y2
(-3, 7) (4, -7) 
/ = divided by 
Plug those values into slope equation
(-7 - 7)/(4 - (-3))
= -14/7 
m = -2
so now we know the slope; -2 
y = -2x+b 
Now lets find b:
Plug in any point on the line, lets use (-3, 7) 
-3 is x 
7 is a y 
y = mx + b
7 = (-2)(-3) + b
7 - 6 = b 
b = 1
So the final equation is 
y = -2x + 1