First, I would convert the equation to slope intercept form.
That would be: y = (3/5)x + 3 , now it will be easier to create the needed equations.
For no solution, keep the slope the same and change the y-intercept.
You could have: y = (3/5)x + 9
For one solution, all we have to do is change the slope.
You could have: y = (4/5)x + 3
For an infinite number of solutions, just multiply the entire equation by any number. Let's use the number 2.
2y = (6/5)x + 6
For this case we must raise an inequality.
We have "d" dollars initially and they are spent 12. Then:

At least 51 dollars remain, then, the sign of inequality is greater or equal in favor of the expression
, that is:

Resolving:

There are at least 63 dollars left in the account.
Answer:

The answer is
A. 3x - y= -7
6.4 kilometers an hour<span />
Answer: 40
Step-by-step explanation:
I can see the answer is 40, but let's try to figure out how to do it.
I like to use the rule of 3. Let's put the number of passes on the left side and the number of games on the right side.

''x'' represents the number of passes in 15 games.
Solve for x;
