Answer:
The slope is -7
Step-by-step explanation:
The indicates the slope/gradient of a graph
Plug in the variable for each equation.
For example:
1. -2(11)+7+9(11)-4=88
The opposite of the number a divided by the number
No. The sign of a function is not related with the fact that it is growing of decreasing.
If the function in the decreasing in the interval (a,b) it means that f(b) < f(a), but yet both f(b) and f(a) may be positive.
For example imagin the function y = - x. It is a straight line and it is decreasing for any interval that you take; this is (-∞, ∞).
If you take the interval (- ∞, 0) the function is decreasing but the values are positive. If you take the interval (0, ∞) the function is decreasing and the values are negative.