-7y - 6y³ + 2y + 4y³ - 5 -1 - 2y³
= -4y³ - 5y - 6 //Combine like terms.
Answer:
Slope: 
Y-int: 9
Step-by-step explanation:

-6x -6x
-2y = -6x + 18
----- ------------
-2 -2
y = 3x + 9
Answer:
rawr
Step-by-step explanation:
free points
Indirect material cost: y
explained by units produced: x
Linear regression. Cost estimation equation: y=mx+b
Constant: b=$15,640
Standard error of y estimate=$3,600
r^2=0.7704
Number of observations: n=22
x coeffient: m=11.25
Standard error of x coefficient=2.19
m=11.25, b=15,640 → y=11.25x+15,640
Answer: The cost estimation equation is y=11.25x+15,640
It is 5 1/9 after being simplified