A straight line in the xy-plane has a slope of 2 and a y-intercept of 2. On this line, what is the x-coordinate of the point whose y-coordinate is 480 ?
Choose the correct choice from the following answers:
A) 249 B) 498 C) 239 D) 823 E) 1,002
slope of 2 and a y-intercept of 2   y-coordinate is 480   y = 2x + 2   478 = 2x   x = 239   Answer:   C. 239
<result>C</result>
A straight line in the xy-plane has a slope of 2 and a y-intercept of 2. On this line, what is the x-coordinate of the point whose y-coordinate is 480 ?