I really lost my brain cell trynna do this someone help me please !

Here:

Step-by-step explanation:

x is how much she spends, y is how much she saves.

for c, you can write:

y = 300, x = 0

y = 200, x = 100

y = 100, x = 200

y = 50, x = 250

y = 1, x = 299

x and y are variables because they can vary depending on one or the other.

The formula is just a relation between x and y. For example, another way can be that I give you $10 and you buy me 5 bottles of water. But if I give you $20, you will buy 10. The amount I give you and the number of bottles you buy me are both dependent and they have a relationship no matter what value they are. And the relationship is described by the function in the question.

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

details

step-by-step explanation: