Learn idea of functions MCQs in math quiz for test prep. Functions and graphs quiz questions has multiple choice questions (MCQ), idea of functions test as by putting value for x as -4 in function y = 5x, answer will be. Answer key help with choices as 1, −20, 20 and −1 problem solving for competitive exam, viva prep, interview questions worksheets. Free math revision notes to practice idea of functions quiz with MCQs to find questions answers based online tests.

MCQ. By putting the value for x as -4 in the function y = 5x, the answer will be

1. 1
2. −20
3. 20
4. −1

B

MCQ. If the monthly pay of salesman is 'y' and includes basic pay \$200 plus a commission of \$5 for every unit he sales then the function for this can be written as

1. x = 205 + 5y
2. 200 + 5xy
3. y = 200 + 5x
4. y = 205 + x

C

MCQ. By putting the value for x as 3 in the function y = 10x, the answer will be

1. 3.334
2. 7
3. 30
4. 13

C

MCQ. Consider the function y = 10 - 4x, if value of x = -1 then the value of 'y' is

1. 6
2. −2
3. 14
4. 2

C

MCQ. If each ticket of amusement park is sold for \$20 then the function for total sales can be written as

1. y = 20 + x
2. 20xy
3. x = 20y
4. y = 20x

D