Answer:
See picture.
Step-by-step explanation:
What am i supposed to be anawering here? as a function of x or y? solving for x or y or simply writing in mx+b form?
In a coordinate point, the values would go (x,y). Substitute the x and y values from the coordinate points into the equation given.
8(3)+B(4)=40
Multiply 8x3
24+B(4)=40
Subtract 24 from both sides
4B=16
Divide the whole equation by 4
B=4
Answer:
-44
Step-by-step explanation:
We have the expression

We need to find the value of the expression when x = -3 and y = 4
Then we must replace the variable with the number -3 and the variable y with the number 4
This is:



Remember that the absolute value always results in a positive number.
So

the answer is -44
Answer:
0.6 liters paint will he need to cover 
Step-by-step explanation:
Direct Variation states that the two quantities are related in such a way that increase in one quantity results in a corresponding increase in the other quantity and vice versa, then such type of a variation is called a direct variation.
i.e 
It is given that the painter uses 1.2 liters of paint to cover 
This is the situation of Direct Variation: As less area cover, less liters of paint.
Let two quantities are x and y;
x represents the area covered by painter
y represents the liters uses by the painter.
Then, the ratio of any two values of y is equal to the corresponding value of x.
i.e,
or

therefore, from the given information we have;
Simplify:

Therefore, 0.5 liters paint required by the painter to cover the area 