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: Linear and other Functions Practice MCQ

Question Statement:

Select the equation of the line perpendicular to the graph of 4y+3x=8.

y = - \frac{4}{3} x - 7

y = \frac{3}{4} x - 8

y = - \frac{3}{4} x + 8

y = \frac{4}{3} x - 7

None of these.

Explanation:

Correct Answer: D

Lines are perpendicular when their slopes are the negative recicprocals of each other such as $2 a n d - \frac{1}{2}$ . To find the slope of our equation we must change it to slope y-intercept form.

$4 y + 3 x = 8$

Subtract the x variable from both sides:

$4 y = - 3 x + 8$

Divide by 4 to isolate y:

$y = \frac{- 3}{4} x + 2$

The negative reciprocal of the above slope: $\frac{- 3}{4} \to \frac{4}{3}$ . The only equation with this slope is $y = \frac{4}{3} x - 7$ .

Question: 1 Test: 2 of 4 Next Test

Tests

You are taking Aptitude Test No. 2

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 1 and Test Number 2 of Functions: Linear and other 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: Select the equation of the line perpendicular to the graph of 4y+3x=8. .... with options: $y = - \frac{4}{3} x - 7$ , $y = \frac{3}{4} x - 8$ , $y = - \frac{3}{4} x + 8$ , $y = \frac{4}{3} x - 7$ can be solved with the concepts and understanding of Functions.