Try these questions from our free Algebra Test practice tests. The correct answer and an explanation follow each question.
When a system of two linear equations has no solution, geometrically the lines are:
Answer: C. Parallel
No solution means the lines are parallel and never intersect.
Two linear equations with the same slope but different y-intercepts have:
Answer: C. No solution
Equal slopes with different y-intercepts mean the lines are parallel with no intersection.
Which method eliminates a variable by adding or subtracting equations?
Answer: C. Elimination
The elimination method adds or subtracts equations to cancel one variable.
What is the vertex form of a quadratic equation?
Answer: B. y = a(x - h)² + k
Vertex form is y = a(x - h)² + k, where (h, k) is the vertex of the parabola.