Page 236 - Algebra 1

Practice Distributed and Integrated
(31) x 6
3. 2(f+3)+4f=6+6f
(28)
Solve.
1. -2.25=9 *2. y+2=11 __ __
Evaluate each expression for the given value of the variable.
5. (m+6)÷(2-5)form=9 (9)
Simplify by combining like terms. 7. 10y3 +5y-4y3
(18)
6. -3(x+12·2)forx=-8 (9)
8. 10xy2 -5x2y+3y2x (18)
9. Identify the subsets of real numbers to which the number √ 7 belongs. (1)
*10. Find the x- and y-intercepts for 5x + 10y = -20. (35)
*11. Find the x- and y-intercepts for -8x + 20y = 40. (35)
*12. Write Explain how knowing the x- and y-intercepts is helpful in graphing a linear (35) equation.
*13. Multiple Choice What is the x-intercept for the equation 15x + 9y = 45? (35) A (0, 3) B (3, 0) C (5, 0) D (0, 5)
*14. Fishery APacificsalmoncanswimatamaximumspeedof8milesperhour.The (35) function y = 8x describes how many miles y the fish swims in x hours. Graph the
function. Use the graph to estimate the number of miles the fish swims in 2.5 hours. 15. Determine if the sequence 34, 29, 24, 19, ... is an arithmetic sequence or not. If yes,
(34) find the common difference and the next two terms. If no, find the next two terms. 16. Error Analysis Two students are finding the common difference for the arithmetic
(34) sequence 18, 15, 12, 9, .... Which student is correct? Explain the error.
*17. Geometry A right triangle is formed by the origin and the x- and y-intercepts of (35) 14x + 7y = 56. Find the area of the triangle.
(31) y + 7 31
4. 3x+7-2x=4x+10
(28)
Student A
18 - 15 = 3 15 - 12 = 3 12 - 9 = 3
Student B
15 - 18 = -3 12 - 15 = -3 9 - 12 = -3
Lesson 35 221