Start by finding the x - and y-intercepts of the line. When an equation is in y=mx+b form, the y-intercept is b. So, the y-intercept is at the point (0,−6). To find the x-intercept, you need a point where the y value is 0 , just like how the y intercept has an x value of 0 . So, plug in 0 for y in the equation: 0=32​x−6, so 32​ x=6, and x=6(23​)=9. The x-intercept, then, is (9,0).Now draw a right triangle with a base of 9 (the difference between the x coordinates) and a height of 6 (the difference between the y-coordinates), and use the Pythagorean Theorem (more on this in the next chapter) to calculate the distance: 62+92=c2, so c2=117, and the distance is 117​, which is (D).