7.83mm= km (using the metric staircase)

7.83 mm to km

7.83* 10^-6 or 7.83/10^6

0.00000783 km

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).

graph them on a graphing calculator, press 2nd trace. select intersect. hit enter until it says answer. ti 84 works best

step-by-step explanation: