Answer:
Slope intercept form is y=mx+b
So y=-1/2x(m=slope which you go down one over 2 from your y-intercept)
y=-1/2x ( There would be no b because your b is 0, that's where it crosses the y axis)
Step-by-step explanation:
The total change in her bank account would be $160,
if you multiply 8x$20 you get $160
Answer:

Step-by-step explanation:
Let the numbers be 
Such that:

Make z the subject

For their product to be maximum, we have:

Substitute
in 

Open bracket

Differentiate w.r.t x and y


Since the products are maximum, then 
For 

Factorize:

Split

Make y the subject

For 

---------------------------------------------------
Substitute y = 0


Factorize



---------------------------------------------------
Substitute 



Re-arrange


Factor x out

Divide through by x



Recall that: 


Take LCM


Recall that:


Take LCM


Hence, the numbers are:

Answer: y = 3x+2
Step-by-step explanation:
slope = (62-32)/(20-10)
point-slope form -> y - 32 = 3(x -10)
y = 3x+2
D*pi so 6cm * pi which is ~18.849cm