Answer:
slope is -2
Step-by-step explanation:
1. go to geogebra.org/classic (this is a graphing calculator)
2. enter your two points by using the second button on the top of the screen
3. connect a line from one point to the other using the 3rd button on the top of the screen
4. click on the line and it shall tell you the equation, including the slope :O))))
the slope is -2 and the equation is y = -2x + 18
9m-28=2m
9m-28-2m=2m-2m
(9m-2m)-28=0
7m-28=0
7m-28+28=0+28
7m=28
(7m)/7 = 28/7
m=4
So (f-g)(x) = 3x2 + x, so when x = 2, the function is 14
7 books with a cost of 28$ then a 2$ charge which will put him right at 30
subtract 4x from both sides
-2y=14-4x
divide each side by -2
y=2x+7