A direct variation equation always takes the form y=kx, where k is a constant
Let's plug in the values of x=6 and y= -3 to solve for the value of k
-3 = k(6)
Let's flip this equality so we have the k on the left side of the equation.
6k = -3
Let's divide both sides by 6
k = -3/6
Now, simplify the fraction
k = -1/2
Now that we found the value of k, our equation is
y = (-1/2) x
Have an awesome day! :)
Answer:
the height when the plant was planted
Step-by-step explanation:
The "y-intercept" is the value of the dependent variable (height) when the independent variable (days) has a value of zero.
The table description tells you the table represents height since the plant was planted. If days since the plant was planted are zero, the height at that time is the height when the plant was planted.
Answer:c
Step-by-step explanation:
18a +6 - 30 = 6a-4
12a -30 =-10
12a=20
a= 5/3
So the original price is "x".
the discounted price by 10% is P(x) = 0.9x.
the price minus a $150 coupon is C(x) = x - 150.
so, if you go to the store, the item is discounted by 10%, so you're really only getting out of your pocket 90% of that, or 0.9x, but!!! wait a minute!! you have a $150 coupon, and you can use that for the purchase, so you're really only getting out of your pocket 0.9x - 150, namely the discounted by 10% and then the saving from the coupon.
C( P(x) ) = P(x) - 150
C( P(x) ) = 0.9x - 150
