Which function has a greater rate of change?

A. Function A has a rate of change of -5 and Function B has a rate of change of -4.5, so Function A has a greater rate of change

Step-by-step explanation:

✔️Function A rate of change can be calculated using two points, (1.5, 5) and (2.5, 0)

Rate of change of function A = -5

✔️Rate of change of Function B, y = -4.5x + 15:

The equation for function B is given in the slope-intercept form, y = mx + b. Here, m represents the rate of change.

Therefore, the rate of change of the equation, y = -4.5x + 15, is -4.5.

✔️Function A has a rate of change of -5 and Function B has a rate of change of -4.5, so Function A has a greater rate of change. This is because the larger the value, regardless of the sign, the steeper the slope.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

3x + 4y -25 =0 represents the amount of change sianna should recieve