Well,you can use the pythagorean theorem,which is a^2+b^2=c^2 to solve for x.
The slope-intercept form is simply the way of writing the equation of a line so that the slope (steepness) and y-intercept (where the line crosses the vertical y-axis) are immediately apparent. Often, this form is called y = mx + b form.
The answer is 4. You take 2 and divide it by 0.5.
