Write an equation of the line that passes through the points (4, 8) and (6, 2).

To find the equation of the line in slope intercept form, we must have the slope and the y intercept. Finding the slope is easy:

So now we want the y intercept. We can use either points to do this, so for simplicity let's use the second one since the numbers are smaller. First of all, we have:

y=-3x+b. Plugging in 6 for x and 2 for y we have, 2=-18+b which means b=20. Checking our answer we have:

y=-3x+20 which means 8=-3*4+20, which is true. So our equation is indeed y=-3x+20

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.