Think: To write the equation of a line in slope-intercept form y=mx+b, you must have the slope (m) and the y-intercept (b).
g(0)= -6 tells us that the y-intercept is (0, -6). Thus, b= -6.
(0,-6) and (15,-9) are points on the line. Find the slope of the line. It is:
-9-(-6)
m = ------------- = -3/15 = -1/5
15-0
Thus, the equation of the line in question is y=(-1/5)x - 6.
Important that you understand that g(0)=-6 is also represented by (0,-6), and that -6 is the y-intercept.
(8r⁶s³ - 9r⁵s⁴ + 3r⁴s⁵) - (2r⁴s⁵ - 5r³s⁶ - 4r⁵s⁴)
8r⁶s³ - 9r⁵s⁴ + 4r⁵s⁴ + 3r⁴s⁵ - 2r⁴s⁵ - 5r³s⁶
8s⁶r³ - 5r⁵s⁴ + r⁴s⁵ - 5r³s⁶
To get the average time of each runner, you would divide 49.44 by 4. So you should get 12.36 for the average for each runner. Hope this helps!!
30-30-15+10 Henry starts with 30, loses 10, and then another 15. Than his sister gives him 10.
