85.33 ........................................
Answer:
Given points: (1,4) and (2,8)
Direct Variation:
The statement y varies directly as x, which means that when x increases, y increases by the same factor.
In other words we can say that, y and x always have the same ratio;
i.e, ; where k is the constant of variation.
or we can write this as : ......[1]
Substitute the value of given points in [1];
For (1,4)
put x =1 and y = 4 we get;
or
k =4
For(2,8)
put x = 2 and y= 8 in [1];
Divide both sides by 2;
4 = k or k =4
As you can see that a direct variation goes through the points (1,4) and (2,8) , the constant variation in both cases is, k =4.
Answer:
Step-by-step explanation:
What two number multiply to equal 6*(-12) and add to equal -1? That is -9 and +8.
Now factor by grouping
Answer:
Order from least degree to highest degree
15xy - 89y², 7x³ + 5y, 2x³y + 5x²
Step-by-step explanation:
For polynomials, the degree a polynomial has can be defined as the highest number of power a variable in that polynomial carries.
From the above question, we are asked to arrange this polynomials from least to highest
Hence:
7x³ + 5y , -2x³y + 5x², 15xy - 89y²
Order from least degree to highest degree
15xy - 89y², 7x³ + 5y, 2x³y + 5x²
4-(-3)/-12-(-9) = 7/-3
Y= -7/3x
-3= -7/3(-9) +b
-3= 21 + b
B= 18
Y= -7/3x + 18
Hope this helps!