Problem

By choosing points not on the logo and Substituting them into the inequality of my logo, show why the inequality used to create the shading give the region created
\[
\text { Inequality }=(2 x+45)^{2}+(2 y-0)^{2} \leqslant 5^{2}
\]

Answer

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Answer

\(\boxed{\text{The inequality correctly represents the shaded region.}}\)

Steps

Step 1 :First, we need to understand the inequality. The inequality $(2x+45)^2+(2y-0)^2\leq 25$ represents a circle with center $(-22.5, 0)$ and radius 5.

Step 2 :Let's choose a point not on the logo, for example, the origin $(0,0)$. We will substitute this point into the inequality to see if it satisfies the inequality.

Step 3 :Substitute $(0,0)$ into the inequality: $(2(0)+45)^2+(2(0)-0)^2\leq 25$

Step 4 :Simplify the expression: $(45)^2+(0)^2\leq 25$

Step 5 :Calculate the result: $2025\leq 25$, which is false.

Step 6 :Since the point $(0,0)$ does not satisfy the inequality, it is not in the shaded region.

Step 7 :Now, let's choose a point inside the logo, for example, $(-22,0)$. We will substitute this point into the inequality to see if it satisfies the inequality.

Step 8 :Substitute $(-22,0)$ into the inequality: $(2(-22)+45)^2+(2(0)-0)^2\leq 25$

Step 9 :Simplify the expression: $(1)^2+(0)^2\leq 25$

Step 10 :Calculate the result: $1\leq 25$, which is true.

Step 11 :Since the point $(-22,0)$ satisfies the inequality, it is in the shaded region.

Step 12 :\(\boxed{\text{The inequality correctly represents the shaded region.}}\)

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