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Algebra 2 Unit 1 Posttest Review [Type here] SHOW ALL WORK. Circle your final answer. 1) What is the first step to solving this equation? 10+6𝑥 3𝑥−4 =5 2) Solve this equation: −9 + 7𝑏 = 8𝑏 − 7 3) Describe the graph of this inequality include if the line is dotted or solid, if you shade above or below the line: 7𝑥 + 2𝑦 ≤ 2 4) Write the inequality that represents this graph: 5) Solve and graph the inequality: 4𝑥 − 18 < 2 and −17𝑥 − 8 ≥ −25 Algebra 2 Unit 1 Posttest Review 6) Solve and graph the absolute value inequality: |3𝑥 + 6| ≤ 3 [Type here] 7) Write the system of equations for the following problem: A vending machine sells chips at $0.55 and candy at $0.75. Last month, the vending machine yielded $189.00 with 280 items sold. −2𝑥 = 8 − 6𝑦 8) What is the solution to this linear system? { −15𝑥 = 21 − 6𝑦 1 9) Classify the system as intersecting, parallel, or coincidental: { − 2 𝑥 = −2 − 𝑦 1 1 + 𝑦 = 2𝑥 + 7 𝑦 > 3𝑥 − 6 10) Graph this system of linear inequalities on GRAPH PAPER: { 𝑦 + 4 ≤ −3𝑥 11) What is the range of all real numbers such that 2x – 5 < 7 AND 4x + 10 > 6? (Hint: You are solving this compound inequality and writing your answer in interval notation) 𝑥 = −8 + 𝑦 12) Solve this system of linear equations by substitution: {−3𝑥 − 3𝑦 = 2 4 Algebra 2 13) Solve this equation: -6+5x=6x – 7 Unit 1 Posttest Review 14) Graph this equation on GRAPH PAPER: -x – y = 1 15) Graph this equation on GRAPH PAPER: -3y = x – 6 [Type here]