Answer:
Direct variation problems are solved using the equation y = kx. ... Step 3: Rewrite the equation from step 1 substituting in the value of k found in step 2. ... Example 3 – If c varies directly as the square root of d, and c = 6 when d = 256, find c ...
The second one. <span>{(3, –1), (7, 1), (–6, –1), (9, 1), (2, –1)} </span>
Answer:
C. III only
Step-by-step explanation:
a quadratic function means that as the maximum power in its arguments it is squaring 1 or more items.
so, let's look at the tables.
table I shows the powers of 2. y = 2^x
2^0 = 1
2^1 = 2
2^2 = 4
2^3 = 8
so, it is not saying anything in general.
table II shows an "identity" equation. y = x
0 = 0
1 = 1
2 = 2
3 = 3
this does not square anything.
table III shows then finally a square equation. y = x^2
0^2 = 0
1^2 = 1
2^2 ≈ 4
3^2 = 9
hurray !