This is from a website so you might have to rephrase it but Direct variation describes a simple relationship between two variables . We say y varies directly with x (or as x , in some textbooks) if:

y=kx

for some constant k , called the constant of variation or constant of proportionality . (Some textbooks describe direct variation by saying " y varies directly as x ", " y varies proportionally as x ", or " y is directly proportional to x .")

This means that as x increases, y increases and as x decreases, y decreases—and that the ratio between them always stays the same.

The graph of the direct variation equation is a straight line through the origin.

4 0

3 years ago

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Solve this system of equations algebraically: y – 10 = 11x + x2 y – 12x = 30

boyakko [2]

(5, 90)

You can solve both equations for y and then set equal to each other. Then use the quadratic equation to solve for x

6 0

3 years ago

4.Write an expression for the speed of the boat coming back from the island in terms of the

Yakvenalex [24]

Answer: just a heads up

my boats speed is 7 so

x=other boats speed times 2?

Step-by-step explanation:

i am just guessing so please do not take this to seriously

8 0

3 years ago