Answer:

Step-by-step explanation:
step 1
Find the slope
The formula to calculate the slope between two points is equal to

we have
the points (−1,12) and (1,2)
substitute



step 2
we know that
The equation of the line in slope intercept form is equl to

where
m is the slope
b is the y-intercept
we have


substitute in the linear equation and solve for b


therefore

Direct variation is when
is the same for each coordinate.
Indirect variation is when x · y is the same for each coordinate.
11. Answer: Direct Variation
<u>Step-by-step explanation:</u>

12. Answer: Indirect Variation
<u>Step-by-step explanation:</u>

The first one is x= -4, y= -12.
the second one is x= 8, y=9
the third one is x=5, y=4