Mx+b=y ? that’s a formula
Hello from MrBillDoesMath!
Answer: The relationship is linear. The equation is y = 2x + 19
Discussion:
When x changes from -7 to -5 ( and increment of of +2), y changes from 5 to 9 ( an increment of +4). When x changes from 5 to -3 (an increment of +2) , y changes from 9 to 13 (an increment of +4)... and so on.....
So far, when x changes by 2, y changes by 4. This means the data falls on a line (so is linear). In fact,
(change in y) / (change in x) = 4/2 = 2 = slope of line.
so y = 2x + b. As the line passes through the point ( -7, 5)
5 = 2 (-7) + b or
5 = -14 + b or ( adding 14 to both sides)
5 + 14 = 19 = b.
Hence the equitation the line is y = 2x + 19
Thank you,
MrB
Answer:
-120.01
Step-by-step explanation:
I just took the test
Answer:
(-9, -3) - Interval over which the difference of the numbers of sales is negative.
(4.9, 10 ) - Interval over which the difference of the numbers of sales 15 positive
(-3, 10) - Interval over which the difference of the numbers of tale decreasing
(0, 4.9) - Interval over which the difference of the numbers of sales is increasing
Hope this helps!