Answer:

Step-by-step explanation:
parabola equation with vertex (0 , 0) and focus length |f| = 7
4*f*(x - h) = (y - k)²
4*7*(x-0)=(y-0)²
28x = y²

Answer:
48
Step-by-step explanation:
-12 x -4 = 48<em><u> (When we multiply two negetive numbers, the product becomes positive )</u></em>
It has a ratio of 1:4, meaning for every x, you'd get 4 from your y
Answer:
Table 3 has a greater y intercept
Step-by-step explanation:
See attachment (1) & (2) for graph and tables
First, we have to determine the y intercept of the graph
The y intercept of any graph or table is the corresponding value of a point where 
In the attached graph.
when 
So:

Next, we determine the y intercept of each table.
Recall that: The y intercept of any graph or table is the corresponding value of a point where 
For table 1:

For table 2:

For table 3:

By comparison, the y intercepts of tables (1) & (2) are less than the y intercept of the graph because: 3 and 2 are less than 4
However, the y intercept of table 3 is greater than the y intercept of the graph because 5 is greater than 4.
<em>Hence, table 3 has a greater y intercept</em>
Answer:
How tightly packed an object's particles are.