ASVAB Practice Test

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Prepare for the ASVAB exam with quizzes designed to improve your skills. Use flashcards and multiple choice questions, each providing hints and explanations. Get ready to succeed!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Graphs of the following equations are straight lines except?

y = 2x + 3
y = -x + 4
y = 0.5x
y = x^2 + 3

The correct answer is: y = 2x + 3

Straight lines have a constant slope (or rate of change), meaning every increase in x or y value results in the same increase or decrease in the other value. Options B and C meet this criteria and are therefore straight lines. Option D is a quadratic equation and represents a curved line. Option A represents a linear equation, but does not have a constant slope as the coefficient of x is 2, meaning every increase in x results in a greater increase in y. Therefore, option A is the only equation that does not have a straight line graph.