When we say that y varies <em>directly </em>with x, we mean that whatever value x is scaled up by, y will be scaled up by, too. The simplest kind of direct variation is one where y = x for all values of x. If you multiply x by some value, y must be multiplied by that same value.
More generally, though, you'll have something of the form y = kx, where the variable k here is referred to as the <em /><em>constant of proportionality.</em> Another way you can think of k is as the <em>ratio of y to x</em>.
In this problem, you're given a set of values for x and y, and you'll need to use those to find the constant of proportionality before you set up an equation relating x to y. Substituting our general equation y = kx for the given values, we have:
-5 = k(15)
To get k, simply divide both sides by 15 to obtain:
k = -5/15 = -1/3
So, our general equation, for <em>any x</em>, would be y = (-1/3)x
Answer:
Step-by-step explanation:
base*hight
Answer:
Step-by-step explanation:
A shirt increased by 1/4 after the increase it was priced at £65 what was the original price of the T-shirt
Answer:x = 313, y = 317, rule = LifeHistory 32.3D6.3D4.5D10.3D5.D31.3D$31.D3. ... D $87.D$82.D3.D$83.3D17$68.5D$67.D5.D$66.D$66.D$ 66.D$66.D$66.D$66. ... A7.4B$60.4B7.3A5.4B$59.4B8. ... D$3.4A12B.B.B11. ... A15.3A2B13.2A 7.B2AB. ... C9.C50.D$2.D4.D44.C7.C50.D5.2A$2.D5.D44.C5.C50.D6.2A$2.2D5.D 44.C3.
Step-by-step explanation:
Answer:
6^6 = 36 (squared my radius in order to find the area of one circle)
36 x 3.14(multiplied my radius by pi to find the area) = 113.04
Now we multiply the area of one circle with the height since it is a prism throughout the whole shape.
113.04 x 9 = 1,017.36 in^3 is your answer.
Step-by-step explanation:
Formula of area of a circle:
pi(3.14 or 22/7 depending on what they tell you to use for pi) x radius squared(your radius is half of your diameter or given radius, your radius should be squared in order to find the area).
πr^2
pi x radius^2(radius being squared)
