Answer:
y = 112
Step-by-step explanation:
If y varies directly as the square of x
mathematically;
y ∝ x²
y = kx² where 'k' is the constant of proportionality
let u know the value of k for this equation by making k the subject of the formular from y = kx²
divide both sides by x²
k = y / x²
given that y = 567 x = 9
k = 567/(9)²
k = 567/81
k = 7
now to get the value of y when x = 4
from the equation conneting x, y,
y = kx²
y = 7 × (4)²
y = 7 × 16
y = 112
Answer: "Point A is a solution because it is in the shaded area
Step-by-step explanation:
When we have an inequality like the one shown in the graph, the shaded area represents the possible solutions to the inequality.
If we have a dashed line, then the points in the line are not solutions (this is the case of the symbols > and < )
If the line is solid, then the points of the line are solutions (this is the case of the symbols ≤ and ≥)
In the graph we can see that point A is inside the shaded area, then point A is a solution.
Then the correct option is:
"Point A is a solution because it is in the shaded area"
