Dividing Real Numbers Simplify each expression. a. 70 ÷ (–5)

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Dividing Real Numbers Simplify each expression. a. 70 ÷ (–5) ALGEBRA 1 LESSON 1-6 Simplify each expression. a. 70 ÷ (–5) The quotient of a positive number and a negative number is negative. = –14 The quotient of a negative number and a negative number is positive. = 6 b. –54 ÷ (–9) 1-6

Dividing Real Numbers Evaluate – – 4z2 for x = 4, y = –2, and z = –4. ALGEBRA 1 LESSON 1-6 x y Evaluate – – 4z2 for x = 4, y = –2, and z = –4. – – 4z2 = – 4(–4)2 Substitute 4 for x, –2 for y, and –4 for z. x y –4 –2 = – 4(16) Simplify the power. –4 –2 = 2 – 64 Divide and multiply. = –62 Subtract. 1-6

Dividing Real Numbers (– ) (– ) Evaluate for p = and r = – . ALGEBRA 1 LESSON 1-6 p r 3 2 3 4 Evaluate for p = and r = – . = p ÷ r Rewrite the equation. p r = ÷ Substitute for p and – for r. 3 2 4 (– ) = Multiply by – , the reciprocal of – . 3 2 4 (– ) = –2 Simplify. 1-6

Dividing Real Numbers Simplify. 1. –8(–7) 2. –6(–7 + 10) – 4 ALGEBRA 1 LESSON 1-6 Simplify. 1. –8(–7) 2. –6(–7 + 10) – 4 Evaluate each expression for m = –3, n = 4, and p = –1. 3. + p 4. (mp)3 5. mnp 6. Evaluate 2a ÷ 4b – c for a = –2, b = – , and c = – . 56 – 22 8m n –7 27 12 1 3 1 2 3 1 2 1-6