Answer:

Step-by-step explanation:
We can model this function using the equation of a line:

Where a is the slope of the line and b is the y-intercept.
To find the values of a and b, we can use the two points given:
(-9, -3):


(-12, 4):


If we subtract the second equation from the first one, we have:




Then, finding the value of b, we have:



So the equation is:

Y = 3.5x + 6
Shows the 6 inital fee plus the 3.50 for each pound
Answer:
Number of rectangles could alex draw with an area of 11cm² = 1
Step-by-step explanation:
Minimum length in centimeter grid = 1 cm
Alex is drawing rectangles with different areas on a centimetre grid.He can draw 3 different rectangles with an area of 12cm²
That is

These are the 3 different rectangles with an area of 12cm².
Now we need to find how many rectangles could alex draw with an area of 11cm².
11 = 1 x 11
So only one factorization is possible.
Number of rectangles could alex draw with an area of 11cm² = 1