To determine if a line is parallel to another, we need to find the slope of the given linear equation, since the parallel line is going to have the same slope.
The slope of a line m can be determined by first puting the linear equation into the slope-intercept form, which is
y = mx + b.
Given the equation as
y = 2x + 4, the slope is 2
However to solve for b, we can start by substituting for the values of y and x which are given as the coordinates of the point through which the line passes.
The given equation is;

The line parallel to y = 2x + 4 is derived as
y = 2x + 11
The answer is an Obtuse angle
Start by adding 2 to both sides to get 3r^2 = 48. then divide both sides by 3 to get r^2 = 16. square root both sides to get r = 4.
9/1 and then your answer would be 9 and then add the a so your full answer would be 9a