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Shelena Forte 44 Home H Week 2 "Introduction to Algebraic Equations" Courses Take Test: W2 Assignment Take Test: W2 Assignment Test Information
Description
Instructions
Multiple Attempts Not allowed. This test can only be taken once.
Force Completion This test can be saved and resumed later. Save All Answers Save and Submit 5 points Save Answer Q U E S T I O N 1 Determine which of the following points lies on the graph of the equation: (0,7)
(0,6)
(0,5)
(6,5) Question Completion Status: (1,5) Q U E S T I O N 2 5 points Save Answer Complete the table. Use the resulting solution points to sketch the graph of the
equation. ? Q U E S T I O N 3 5 points Save Answer
Graphically estimate the x­ and y­ intercepts of the graph:
y = x3 ­ 9x x­intercept: (±3,0),(0,0)
y­intercept: (0,0)
x­intercept: (3,0),(0,0)
y­intercept: (0,0)
x­intercept: (­3,0),(0,0)
y­intercept: (0,0)
x­intercept: (0,±3),(0,0)
y­intercept: (0,0)
x­intercept (0,3),(0,0)
y­intercept (0,0) Q U E S T I O N 4 5 points Save Answer Find the x­ and y­intercepts of the graph of the equation y=49­7x
x­intercept: (7,0)
y­intercept: (0,­7)
x­intercept: (49,0)
y­intercept: (0,7) y­intercept: (0,7) x­intercept: (­7,0)
y­intercept: (0,­49)
x­intercept: (49,0)
y­intercept: (0,49)
x­intercept: (7,0)
y­intercept: (0,49) Q U E S T I O N 5 5 points Save Answer Determine whether the value of x=7 is a solution of the equation: no
yes Q U E S T I O N 6 5 points Save Answer Solve the equation 8­5x=6 Q U E S T I O N 7 Solve the equation and check your solution.
2­4x=30 5 points Save Answer ­2­4x=30
9
11
8
7
10 Q U E S T I O N 8 5 points Save Answer Solve the equation and check your solution.
5y + 1 = 6y ­ 5 + 8y
2 /3 3 /2 6 /5 5 /6 ­2/3 Q U E S T I O N 9 5 points Save Answer Solve the equation and check your solution.
67x ­ 24 = 3x + 8(8x­3)
3
67
3
67
All real numbers Q U E S T I O N 1 0 Solve the equation and check your solution. 5 points Save Answer Solve the equation and check your solution. 10
6
7
9
8 Q U E S T I O N 1 1 5 points Save Answer Solve the equation and check your solution. (If not possible, explain why.) 2
5
6
4
10 Q U E S T I O N 1 2 5 points Save Answer Solve the equation and check your solution. (If not possible, explain why) ­18
7
11
No solution. The variable is divided out. No solution. The variable is divided out.
20 Q U E S T I O N 1 3 5 points Save Answer Write the quadratic equation in general form.
4x2 = 8 ­ 9x
4x2 + 9x + 8 = 0
4x2 + 9x = ­8
4x2 ­ 9x ­ 8 = 0
4x2 + 9x ­ 8 = 0
4x2 + 9x ­ 8 = 0 Q U E S T I O N 1 4 5 points Save Answer Solve the quadratic equation by factoring.
x2 ­ 6x + 5 = 0
1, 5
1,­5
1,­5
1,5
6,5 Q U E S T I O N 1 5 Solve the quadratic equation by factoring.
x2 + 8x + 16 = 0
4
1/4
4
±4 5 points Save Answer ±4 1 /4 Q U E S T I O N 1 6 5 points Save Answer Solve the equation by extracting square roots.
(x+6)2 = 5
6 + √5
6 ± √5
6 ­√5
6 ± √5
6 + √5 Q U E S T I O N 1 7 5 points Save Answer Use the Quadratic Formula to solve
x2 + 20x + 98 = 0
x = ­8, x = ­12
x = ­√2 ­ 10, x = √2 ­ 10
x = ­√3 ­ 10, x = √3 ­ 10
x = 10, x = ­10
x = ­√2 ­ 9, x = √2 ­ 9 Q U E S T I O N 1 8 Write the complex number in standard form. √ ­9 3i
3i
9i
4i 5 points Save Answer 4i
9i 5 points Save Answer Q U E S T I O N 1 9 Find real numbers a and b such that the equation is true.
a + bi = 14 + 2i
a=16, b=4
a=18, b=6
a=14, b=2
a=15, b=14
a=17, b=5 5 points Save Answer Q U E S T I O N 2 0 Find all solutions to the following equation. x = ­17/4
x=9
no solution
x=­17
x=­8 Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit

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