The "m" in y = mx + b is the <u>slope.</u>
It is the number of units a point goes up, down, left, or right each time. Making the line linear/straight.

"rise" is the the number of units you go up(+) or down(-), "run" is the number of units you go to the right
For example, if your slope is:

You are going up 1 unit, and to the right 2 units
3 or 
You are going up 3 units, and to the right 1 unit

You are going down one unit, and to the right 2 units
-3 or 
You are going down 3 units, and to the right 1 unit
Answer: x = 0.3
Step-by-step explanation:
12x-18=-15+6x
6x = 3
x = 1/2 or 0.5
[Corrected]
I'm not sure what you are trying to convey, but you cannot have more than one digit, so this is imposible
Answer:
x = 1.2
y = 6.6
Step-by-step explanation:
1) y= -2x+9
2) 8x-3=y
Substitute y in equation 1 using y in equation 2.
8x - 3 = -2x + 9
+ 3 on both sides
8x = -2x + 12
+ 2x on both sides
10x = 12
x = 1.2
To find y, plug in x
8x - 3 = y
9.6 - 3 = y
6.6 = y
Hope this helps :)
If the six appetizer recipes are distributed evenly between the three weeks, that would mean that Becky learned two recipes per week.
The answer is 10 weeks, every week Becky learns two recipes.
2 x 10=20