Answer:
19.) x = 5 (I believe you are solving for 'x', not 'y' as indicated in the question)
*I can not see all of question #20 to answer it.
Step-by-step explanation:
In order to solve for 'x', you need to remember that parallel lines (lines that never touch) have the same slope. Since the slope of the parallel line given by the equation y = 4x - 1 is '4', then the value of the slope for the other line must be '4'. Using slope formula, you can set up a proportion to solve for 'x':
[tex]\frac{(y_{2}-y_{1})}{(x_{2}-x_{1})}=\frac{(-4 - 8)}{2 - x}=\frac{4}{1}[/tex]
Cross-multiply: 4(2 - x) = -12
Distribute: 8 - 4x = -12
Subtract 8 from both sides: 8 - 4x - 8 = -12 - 8 or -4x = -20
Solve for x: x = 5
