The values of x and y vary directly and one pair of values are given. write an equation that relates x and y. simplify completely.
x=-5,y=10
need

y = - 2x

Step-by-step explanation:

Given that x and y vary directly then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition x = - 5, y = 10

k = = = - 2

y = - 2x ← equation of variation

it is true

step-by-step explanation:

all the combinations add up i used   calculator

answer: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0