Answer:Incorrect.
For example, two equations with same y intercept.
y = 2x + 3
y = 5x + 3
This system has only one solution.
Another example,
y = x + 7
y = x + 7
This system has infinitely many solutions.
So she is not correct because of the first example.
Step-by-step explanation:
You need to simplify it first.

Use distribution

y=mx+b
m=slope
your slope is -4 :)
Answer:
b hopefully this helps you with work
Answer:
i am struggling with that too
Step-by-step explanation:
To answer this question we can propose the following equation:

Where:
x is the number of weeks elapsed.
d is the debt depending on the weeks.
Robert promised to pay at least $ 67 each week.
Therefore, after 5 weeks the debt of rober should be:


Then scenario A) is possible because
.
After 6 weeks:


Then scenario B) is possible because
.
After 7 weeks


Then scenario C) is possible because
.
After 8 weeks


So scenario D) is NOT possible because 
Finally the correct answer is option D.