math

ALGEBRA QUESTIONS

Algebra Questions

1 Therefore , the answer is D

2 The first two equations is the system that represents the problem

Substituting y from the second equation into the first gives the third

Solving this equation gives x -13

Substituting -13 for x into the second equation gives the equation on line 7

Solving this equation for y gives y -46

Therefore , the two numbers are -13 and -46

3 Solving the first equation for y gives the second equation

Substituting that value into the

third equation gives the fourth equation

Solving the fourth equation gives x 6000

Therefore , the Answer is C 6000

4 First , multiply the second equation by 4 so that the x variable can be eliminated by

Addition . Add the first equation and the second equation multiplied by 4 together , then solve for y . This gives y 1

Substitute 1 for 1

Substitute 1 for y in the second equation and solve for x . This gives x 1

Thus , the answer is x 1 , y 1

5 When written as a function of x , it written as such 6 7 Thus , the Answer is D ) 27

8 Thus the answer is f (-3 2

9 ) Slope formula

Since the slopes are the same , the lines are parallel

Therefore the Answer is A ) Parallel

10 Thus , the slope is 7 /2 or 3

11 ) Put y x in slope intercept form Thus , The slope is 1 , and the y intercept is 0

12

13 Take the second equation and multiply it by -1 to eliminate y when it is added to the

First equation . Adding these two equations gives x 2 . Substituting x back into the second equation and solving for y gives y -1

Thus the Answer is x 2 , y -1

14 Therefore , the answer is f (a - 1 -5a 4

15 Substituting 2x for y in the first equation gives x 4 . Substituting 4 for x in the second equation gives y 8

Thus , The answer is x 4 , y 8

16 Therefore , the larger number is C ) 17

17 Therefore , the width is B ) 7 Inches

18 19 Therefore , the two numbers are x 21 , y 91

20 21 Thus , the Answer is D (0 ,4

22 Therefore , the Answer is C (0 , -4 ) and (-3 , -7

23 y the hourly wage , x number of units per hour

If the number of units per hour 20 , then the equation is Thus the answer is 23 .00 . The answer is A 23 .00

24 There fore the slope is undefined . The answer is D ) Undefined

25

The line x -9 will be parallel to the y axis . Therefore the slope is undefined . Also , because the line is parallel to the y axis , it will obviously not cross the y axis

Therefore , the answer is D ) Undefined slope and no y intercept

26

The y intercept is -9 , and the slope is 6 (given )27

First , find the slope Thus , the slope is undefined...