Each person who enters a store receives a $5 off coupon. in the equation y = 5x, y is the total value of the couponds given out by store, and x is the number of people receiving the coupons. wen says the function is continuous, because the number of people is unlimited. is wen right or wrong ?

Wen is incorrect.

The reason being is that the function does not continue in both directions from the origin. Since we cannot have a negative value of people, we cannot use all values of x as inputs in the equation. Therefore, it is not continuous.

21

step-by-step explanation:

11279

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