Which statement best describes a system of linear equations that has no solution?
What is the solution to the system of equations below?
Simplify the expression:
Subtract:
What is the product of ?
What is the greatest common factor (GCF) of $12x^2y and \20xy^2$?
Which of the following is a factor of ?
For the system and $2x + y = 10$, which method would be most efficient to solve it?
What does the solution to a system of two linear equations represent graphically?
What is the converse of the statement: "If a polygon is a quadrilateral, then it has four sides"?
What is the inverse of the statement: "If it is raining, then the ground is wet"?
What is the contrapositive of the statement: "If a triangle is equilateral, then it has three equal sides"?
What is the sum of the measures of the interior angles of any triangle?
A triangle has angle measures of $60^{\circ}, \60^{\circ}, and \60^{\circ}$. What type of triangle is it?
Which equation represents the Pythagorean theorem for a right triangle with legs and , and hypotenuse ?
In the diagram above, angles and are what type of angles?
In the diagram above, if lines and are parallel, angles and are what type of angles?
A linear equation is given by $2x + y = 7$. Which of the following equations represents the same line?
Solve the following system of equations using the substitution method.
$2x - y = -2$
Solve the following system of equations using the elimination method.
$3x + 2y = 7 \5x - 2y = 17$
Multiply the polynomials:
Factor the quadratic expression completely:
Using the Pythagorean theorem, find the length of the hypotenuse in the right triangle shown above, given legs and . Show your work.
In a triangle, two of the angles measure $40^{\circ} and \65^{\circ}$. What is the measure of the third angle?
In the diagram above, if lines and are parallel and cut by transversal , and , what is the measure of ? Show your work.
In the triangle above, , , and . Find the value of . Show your work.
Proof Problem 1
Complete the two-column proof using the diagram above.
Given: and are vertical angles. Prove:
Proof:
| Statement | Reason |
|---|---|
| 1. and are vertical angles | 1. (27) |
Complete the two-column proof using the diagram above.
Proof (continued):
| Statement | Reason |
|---|---|
| 2. and form a linear pair. and form a linear pair. | 2. (28) |
Complete the two-column proof using the diagram above.
Proof (continued):
| Statement | Reason |
|---|---|
| 3. | |
| 3. (29) |
Complete the two-column proof using the diagram above.
Proof (continued):
| Statement | Reason |
|---|---|
| 4. | 4. (30) |
Complete the two-column proof using the diagram above.
Proof (continued):
| Statement | Reason |
|---|---|
| 5. | 5. (31) |
Complete the two-column proof using the diagram above.
Proof (continued):
| Statement | Reason |
|---|---|
| 6. | 6. (32) |
Proof Problem 2
Complete the two-column proof using the diagram above.
Given: Line Line , and is a transversal. Prove:
Proof:
| Statement | Reason |
|---|---|
| 1. | 1. (33) |
Complete the two-column proof using the diagram above.
Proof (continued):
| Statement | Reason |
|---|---|
| 2. | 2. (34) |
Complete the two-column proof using the diagram above.
Proof (continued):
| Statement | Reason |
|---|---|
| 3. | 3. (35) |
Complete the two-column proof using the diagram above.
Proof (continued):
| Statement | Reason |
|---|---|
| 4. | 4. (36) |