0.10x+0.25y=11.40
Solve

0.10x+0.25y=11.40

remove the x and bring it to the other side using opposite operation getting:

0.10+0.25y=11.40x

remove the 11.40 from the right side to the left.

(0.10+0.25y)/11.40=x

I hope that helped. It's kind of confusing since there's no value for y.

yes. we do proportions in probabilities.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0