If y varies directly as x and the constant variation is -2, which equation represents this relationship?

Mathematics

1 answer:

kozerog [31]3 years ago

4 0

Answer:

y = -2x

Step-by-step explanation:

If y varies directly with x, it is:

y = kx

Constant is -2, it means k= -2

y = - 2x

You might be interested in

Help Please!!!!!!!!!!

LenKa [72]

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

$x+3y\leq 6$

Isolate the variable y

$3y\leq 6-x$

$y\leq 2-(1/3)x$

The solution is the shaded area below the solid line

Is below because the symbol of the inequality is less

Is a solid line because the line is included in the solution

The equation of the solid line is $y=2-(1/3)x$

To graph the solution find the intercepts

Find the x-intercept (value of x when the value of y is equal to zero)

For y=0, x=6 --------> point (6,0)

Find the y-intercept (value of y when the value of x is equal to zero)

For x=0, y=2 -------> point (0,2)

Graph the inequality

see the attached figure

5 0

2 years ago

David's last equation to solve is x/100+3/100=8/100. Write and solve an equivalent equation with easier numbers that would give

JulijaS [17]

$\sf\dfrac{x}{100}+\dfrac{3}{100}=\dfrac{8}{100}$

Subtract 3/100 to both sides:

$\sf\dfrac{x}{100}=\dfrac{5}{100}$

Cross multiply:

$\sf100x=500$

Divide 100 to both sides:

$\sf~x=5$

Or we could just multiply both sides of the equation by 100, to give us:

$\sf~x+3=8$

Subtract 3 to both sides:

$\sf~x=5$

3 0

3 years ago

Raise <br> n<br> to the 6th <br> power,<br> then add 5 to the result

aleksley [76]

Except there are values you want to substitute into the expression, this is what your answer looks like:

$n^{6}+5$