Answer:

Step-by-step explanation:
<u>Point slope form</u>
y=mx +c, where m is the gradient and c is the y-intercept.
To find the gradient, use the formula below:


Substitute the value of m into the equation

To find c, substitute a coordinate into the equation.
When x= -3, y=7,

Thus, the equation of the line is 
Answer:
If A = {1,20,30..} and B = {4,6} find n(A-B)?
Answer:
a = 18
Step-by-step explanation:
36 / 2 = 18
18 + 18 =36
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