Lesson Example Discussion Quiz: Class Homework |
Step-5 |
Title: Algebra |
Grade: Best-SAT3 Lesson: S5-P1 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
Step | Type | Explanation | Answer |
---|---|---|---|
1 |
Problem |
Solve the following inequality: \$ 4x + 2y ge 6x - 3y + 2 \$. |
|
2 |
Step |
Combine terms with variables on one side of inequality, then simplify |
\$ 4x - 6x + 2y + 3y ge 2 \$ \$ -2x + 5y ge 2 \$ |
3 |
Step |
Divide both sides of the inequality by 5, and then simplify the expression |
\$ (- 2x + 5y) / 5 ge 2 / 5 \$ \$ (- 2x)/5 + (\cancel5y)/\cancel5 ge 2/5 \$ \$ -2/5 x + y ge 2/5 \$ |
4 |
Step |
Move the x variable to the right side, then a simplification |
\$ y ge 2/5 + 2/5 x \$ \$ y ge (2x + 2) / 5 \$ |
5 |
Step |
Therefore, the solution to the inequality \$4x + 2y ge 6x - 3y + 2 \$ is \$ y ge (2x + 2) / 5 \$. |
|
6 |
Choice.A |
\$y ≥ (2x+2)/5\$, is correct. It represents the inequality in terms of x |
\$ y ge (2x + 2) / 5 \$ |
7 |
Choice.B |
Option B, with the inequality \$y ≥ (x + 2)/5\$, isn’t accurate; it should feature 2x in the numerator |
\$ y ge (x + 2) / 5 \$ |
8 |
Choice.C |
The state \$y ≤ 2x - 2/5\$, but our solution yields: \$y ≥ 2x + 2/5\$, reversing the inequality |
\$ y le (2x - 2)/5 \$ |
9 |
Choice.D |
The inequality \$y ≤ (2x + 1)/3\$ is incorrect; it should be \$y ≥ (2x + 1)/3\$, as the expression varies |
\$ y le (2x + 1) / 3 \$ |
10 |
Answer |
Option |
A |
11 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
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