Diane is a software saleswoman. let y represent her total pay (in dollars). let x represent the number of copies of english is fun she sells. suppose that x and y are related by the equation =+160090xy. answer the questions below. note that a change can be an increase or a decrease. for an increase, use a positive number. for a decrease, use a negative number.

1.what is the change in mary's total pay for each copy of english is fun she sells?
2.what is mary's total pay if she doesn't sell any copies of english is fun? ?

There is an error in the equation provided. Looking at other similar question such as this, I think the equation related to x and y should be 90x + 1600 = y

a) 90

b) 1600

Step-by-step explanation:

The equation 90x + 1600 = y is an equation of a straight line in the form y = mc + c

Adjusting the equation to the general form we get

y = 90x + 1600

m = 90

c = 1600

a) the change in Mary's total pay for each copy she sells in this case is referring to the change of y to the change of x.

In other word, it is the slope of the function.

m = 90

b) if Mary didn't sell any copies, the value of x will be 0.

In graph of a straight line, the value when x= 0 is at the value of y-intercept,

c = 1600

step-by-step explanation:

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