Directions How to Answer

Aptitude Test Topic: Functions

Functions include Linear functions and Graphical functions.

Directions

Solve the given question and choose the best answer from the given choices.

To give the answer click/tap the option alphabet for your answer choice. for correct answer green check and for wrong answer a red cross will appear along with a button to show explanation with or without video of the question answer.

Functions: Graphing Functions Practice MCQ

Question Statement:

Find the x-intercepts for the circle given by the equation:

$(x - 1)^{2} + y^{2} = 9$

Explanation:

Correct Answer: A

To find the x-intercepts (where the graph crosses the x-axis), we must set y=0. This gives us the equation:

$(x - 1)^{2} = 9$

Because the left side of the equation is squared, it will always give us a positive answer. Thus if we want to take the root of both sides, we must account for this by setting up two scenarios, one where the value inside of the parentheses is positive and one where it is negative. This gives us the equations:

$x - 1 = \sqrt{9}$ and $x - 1 = - \sqrt{9}$

We can then solve these two equations to obtain $x = - 2 o r 4$

Question: 7 Test: 3 of 4 Next Test

Tests

You are taking Aptitude Test No. 3

Each aptitude test is comprised of 10 except the last test which might have fewer than 10 in some topics.

You are at question (MCQ) number 7 and Test Number 3 of Functions: Graphing Functions. To deal with Functions questions, you must take lesson on the subject. In case of science and Art subjects revise your text books and in case of general aptitude topics take lessons from the topic page.

The question:

Find the x-intercepts for the circle given by the equation: