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ALGEBRA 1 LESSON 1-6 Dividing Real Numbers Simplify each expression. a. 70 ÷ (–5) = –14 b. The quotient of a positive number and a negative number is negative. 1-6 –54 ÷ (–9) = 6 The quotient of a negative number and a negative number is positive. ALGEBRA 1 LESSON 1-6 Dividing Real Numbers x Evaluate – y – 4z2 for x = 4, y = –2, and z = –4. –4 – x – 4z2 = –2 – 4(–4)2 y –4 Substitute 4 for x, –2 for y, and –4 for z. = –2 – 4(16) Simplify the power. = 2 – 64 Divide and multiply. = –62 Subtract. 1-6 ALGEBRA 1 LESSON 1-6 Dividing Real Numbers Evaluate p for p = 3 and r = – 3 . r p =p÷r r 2 4 Rewrite the equation. 3 (– 34 ) Substitute 2 for p and – 4 for r. 3 4 Multiply by – 3 , the reciprocal of – 4 . = 2 ÷ = 2 (– 3 = –2 ) 3 3 4 Simplify. 1-6 3 ALGEBRA 1 LESSON 1-6 Dividing Real Numbers Simplify. 1. –8(–7) 2. –6(–7 + 10) – 4 – 22 56 Evaluate each expression for m = –3, n = 4, and p = –1. 3. 8m + p n –7 4. (mp)3 5. mnp 27 12 1 2 6. Evaluate 2a ÷ 4b – c for a = –2, b = – 1 , and c = – . 3 1 32 1-6