What are the x and y-intercepts of the line described by this equation? 2x + 4y = 12.4

Find the equation of the line that goes through the points (4, –1) and (2, –5). use slope formula,equation,to find the slope of a line that passes through the points. m = use slope-intercept form, y = mx + b, to find the y-intercept (b) of the line. b = write the equation in slope-intercept form, y = mx + b.

Having a hard time understanding this question (see attachment).

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83