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I need help to answer this q in precalculus

I need help to answer this q in precalculus

Daniel Kevins

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Question 1 (4 points)

Question 1 Unsaved

Solve the system of equations by substitution.

$f1q5g1$

Question 1 options:

A)	x = 2, y = -11; (2, -11)

B)	x = 2, y = 11; (2, 11)

C)	x = 9, y = -11; (9, -11)

D)	x = 9, y = 2; (9, 2)

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Question 2 (4 points)

Question 2 Unsaved

Solve the system of equations using Cramer’s Rule if it is applicable. If Cramer’s Rule is not applicable, say so.

$f1q19g1$

Question 2 options:

A)	x = 2, y = -5; (2, -5)

B)	x = -5, y = -2; (-5, -2)

C)	x = 5, y = -2; (5, -2)

D)	x = -2, y = 5; (-2, 5)

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Question 3 (4 points)

Question 3 Unsaved

Verify that the values of the variables listed are solutions of the system of equations.

$f1q1g1$

x = -2, y = -3

Question 3 options:

solution

B)	not a solution

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Question 4 (4 points)

Question 4 Unsaved

Graph the system of inequalities.

y < -x + 10
y > 9x – 3
$f1q28g1$

Question 4 options:

$f1q28g4$

$f1q28g5$

$f1q28g2$

$f1q28g3$

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Question 5 (4 points)

Question 5 Unsaved

Solve the system of equations using substitution.

$f1q22g1$

Question 5 options:

A)	x = -4, y = 5; x = -5, y = 4 or (-4, 5), (-5, 4)

B)	x = 4, y = -5; x = 5, y = -4 or (4, -5), (5, -4)

C)	x = -4, y = -5; x = -5, y = -4 or (-4, -5), (-5, -4)

D)	x = 4, y = 5; x = 5, y = 4 or (4, 5), (5, 4)

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Question 6 (4 points)

Question 6 Unsaved

Find the value of the determinant.

$f1q17g1$

Question 6 options:

-4

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Question 7 (4 points)

Question 7 Unsaved

Solve the system of equations. If the system has no solution, say that it is inconsistent.

$f1q14g1$

Question 7 options:

A)	x = $f1q14g2$ , y = $f1q14g3$ ; $f1q14g4$

B)	x = -9, y = -8; (-9, -8)

C)	x = 9, y = 2; (9, 2)

D)	inconsistent

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Question 8 (4 points)

Question 8 Unsaved

Solve the system of equations by elimination.

$f1q11g1$

Question 8 options:

A)	x = 3, y = 8; (3, 8)

B)	x = 2, y = 8; (2, 8)

C)	x = 3, y = 9; (3, 9)

D)	x = 2, y = 9; (2, 9)

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Question 9 (4 points)

Question 9 Unsaved

Solve the system of equations using substitution.

$f1q21g1$

Question 9 options:

A)	x = 6, y = 5; x = 5, y = 6 or (6, 5), (5, 6)

B)	x = -6, y = -5; x = -5, y = -6 or (-6, -5), (-5, -6)

C)	x = -6, y = 5; x = -5, y = 6 or (-6, 5), (-5, 6)

D)	x = 6, y = -5; x = 5, y = -6 or (6, -5), (5, -6)

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Question 10 (4 points)

Question 10 Unsaved

Solve the system of equations using Cramer’s Rule if it is applicable. If Cramer’s Rule is not applicable, say so.

$f1q20g1$

Question 10 options:

A)	x = 9, y = 3; (9, 3)

B)	x = -9, y = 3; (-9, 3)

C)	x = -3, y = -9; (-3, -9)

D)	x = 3, y = 9; (3, 9)

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Question 11 (4 points)

Question 11 Unsaved

Graph the system of inequalities.

2x + y > 6
2x + y < 1
$f1q25g1$

Question 11 options:

$f1q25g2$

$f1q25g4$

C)	No solution $f1q25g3$

$f1q25g5$

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Question 12 (4 points)

Question 12 Unsaved

Verify that the values of the variables listed are solutions of the system of equations.

$f1q3g1$

x = 4, y = 3

Question 12 options:

solution

B)	not a solution

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Question 13 (4 points)

Question 13 Unsaved

Find the value of the determinant.

$f1q18g1$

Question 13 options:

-8

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Question 14 (4 points)

Question 14 Unsaved

Solve the system of equations by elimination.

$f1q10g1$

Question 14 options:

A)	x = 1, y = 0; (1, 0)

B)	x = 0, y = 0; (0, 0)

C)	x = 0, y = 1; (0, 1)

D)	x = 1, y = 1; (1, 1)

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Question 15 (4 points)

Question 15 Unsaved

Solve the system of equations by elimination.

$f1q12g1$

Question 15 options:

A)	x = -18, y = 5; ( -18, 5)

B)	x = -5, y = 18; (-5, 18)

C)	x = 18, y = -5; (18, -5)

D)	x = -18, y = 6; (-18, 6)

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