Answer:
y = -2x + 1 
Explanation:
The equation is in standard form, first, we need to convert it to slope-intercept form. 
5 = -10x - 5y
5 + 10x = -5y 
Divide both sides by -5 to isolate y variable. 
y = -2x - 1 
If the line is parallel, the slope remains the same. 
To find the y-intercept, you need to plug the values of x and y into the equation, which is y = 2x + b
5 = -2(-2) + b
5 = 4 + b
1 = b
The equation is -2x + 1