9514 1404 393
Answer:
-12, -21
Step-by-step explanation:
Let x represent the first number. Then the second is x-9. The other relation is ...
4x = 2(x-9) -6
2x = -24 . . . . . subtract 2x, simplify
x = -12
x-9 = -21
The first number is -12; the second number is -21.
I feel it should be 30 because x represents the number of lessons, and 30 is multiplied by that.
It means the scatter plot is a line with negative slope. The relation is perfectly described by a linear equation.