What is the sum of the first 200 positive even integers?

2, 4, 6, 8, 394, 396, 398, 400

Notice the pattern:
sum of first and last number is 402
sum of second and second to the last is 402
sum of third and third to last is 402

How many of these "pairs" are there? (the answer is 100)

Multiply 100 x 402 = 40200

Where m is the slope of the line and b is the y-intercept of the line, or the y-coordinate of the point at which the line crosses the y-axis. to write an equation in slope-intercept form, given a graph of that equation, pick two points on the line and use them to find the slope. this is the value of m in the equation.

Where are the calculations?