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Anastasy [175]
3 years ago
10

I do not understand this at all. help please

Mathematics
2 answers:
Pavel [41]3 years ago
6 0

Remark

What you are trying to do is isolate the y value. Then you just interpret what you found.

Equation

-9x + 10y = - 9

Solve

x and y must be on opposite sides of the equal sign. Add 9x to both sides.

10y =  9x - 9                  Divide by 10

y = 9x/10 - 9/10

There's the equation. Now all you need do is interpret it.

Meaning

The general equation for this situation is

y = mx + b

m (the number in front of the x) is the slope

y = 9/10 x - 9/10

So the slope is 9/10

b  is the number by itself on the right. It is the y-intercept and it it -9/10

Since slope is greater than 0, C cannot be right.

Since the y intercept is less than 0, A, B, and C are all incorrect which leaves D

Answer D

Len [333]3 years ago
5 0

Equation:

-9x+10y=-9

10y=9x-9

y=9/10x-9/10


Slope: 9/10

Y intercept:  -9/10


So your answer is D


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