Answer:
See below in bold.
Explanation:
Part 1.
The point slope form is y - y1 = m(x - x1)
Here m, the slope = 1 as it is parallel to y = x , x1 = 2 and y1 = 4 so
y - 4 = 1(x - 2)
y - 4 = x - 2 is the required equation.
Part 2.
y - 4 = x - 2
y = x - 2 + 4
y = x + 2 is the slope-intercept form.
Part 3.
y = x + 2
-x + y = 2 is the general (standard) form of the equation.