Answer:
(a)y=-10x
(b)x=0.9
Step-by-step explanation:
If y varies directly with x, we write:
![y \propto x\\y=kx$ where k is the constant of proportionality.\\If $x = -19, y = 190\\190=-19k\\$Divide both sides by -19\\k=190 \div -19\\k=-10\\](https://tex.z-dn.net/?f=y%20%5Cpropto%20x%5C%5Cy%3Dkx%24%20where%20k%20is%20the%20constant%20of%20proportionality.%5C%5CIf%20%20%24x%20%3D%20-19%2C%20y%20%3D%20190%5C%5C190%3D-19k%5C%5C%24Divide%20both%20sides%20by%20-19%5C%5Ck%3D190%20%5Cdiv%20-19%5C%5Ck%3D-10%5C%5C)
Therefore, a direct variation equation relating y to x is:
(a)y=-10x
(b)When y=-9
Substituting y=-9 into the equation obtained in (a) above
![-9=-10x\\$Divide both sides by -10$\\x=-9\div -10\\x=0.9\\$Therefore, when $ y=-9, x=0.9](https://tex.z-dn.net/?f=-9%3D-10x%5C%5C%24Divide%20both%20sides%20by%20-10%24%5C%5Cx%3D-9%5Cdiv%20-10%5C%5Cx%3D0.9%5C%5C%24Therefore%2C%20when%20%24%20y%3D-9%2C%20x%3D0.9)
3x67=201 and that is the answer for this question
Answer:
-66
Step-by-step explanation:
P(8) = -8^2 - 2
-64 -2 = -66
Answer:
The total amount of gross profit is 1,490,400
Step-by-step explanation:
1242000 x 1.20 =1,490,400
Hope I helped :)
7 hundred thousand is the value