Answer:
3/-1
Step-by-step explanation:
The slope is 3/-1 (Rise 3 on the y axis, run to the negatives by 1 on the x axis)
To find the slope of two points, use the formula of y2-y1/x2-x1 (For example, with this equation it would be 10-4/10-12)
I'm not sure what it means to interpret the slope, but hopefully this helped you!
Answer:

Step-by-step explanation:
The given equation is

The slope of this line

Since all parallel lines have the same slope, the slope of our line is also m=1.
We now use the point-slope formula

Since the line passes through (-1,-1)
We gave

We substitute the slope and point to get



It is 4 because 3 times 4 equals 12
Cost/(number of cassettes) = $14.50/2 = x/15
Multiply by 15 to solve
15*($14.50/2) = x = $108.75
15 cassettes will cost $108.75.
Your answer to this problem is 180 girls in green valley elementary school.