# Algebra Revision Questions

1. Graph the equation using the slope and the y-intercept

y=10/7x+3

2. Solve by the substitution method

3x+4y=12

x=37-5y

3. Solve:

5/8x + 1/16x=3/16 + x

9. Type an inequality

-0.05x<-45

I think the answer is x>900 is that right?

10. Translate to an algebraic expression. The product of 26% and some number let d represent the variable.

.26d is this right.

13. Type an ordered pair. x+6y=9 (1)

x=5-6y (2)

14. Solve using the multiplication principle.

-3/4x=-9/10

16. Find the domain of the function

p(x) =X to the second power -2x+5

Find the domain of P

21. Graph the line containing the given pair of points and find the slope.

(5,3) (-2,-4)

24. Graph the equation and indentify the y-intercept

y+x=-8

25. Soybean meal is 12% protein, cornmeal is 6% protein. How many pounds of each should be mixed together in order to get 240-lb mixture that is 10% protein.

1-How many pounds of the corneal should be in the mixture?

2-How many pounds of the soybean should be in the mixture?

29. Find the slope

(0,1) (2,0)

33. Find the domain of the function

g(x)=1/8-5x

34. Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 60 mph and Train B is traveling at 80 mph. Train A passes a station at 4:20am. If Train B passes the same station at 4:35am, at what time will train B catch up to train A?

36. Decide whether the pair of lines is parallel, perpendicular, or neither.

4x+2y=1

2x-4y=9

37. Solve by using the elimination method

2x+3y=4

4x+6y=8

42. Solve the system of equations by graphing. Then classify the system as consistent or inconsistent and as dependent and independent.

9x-6y=-24

6y-9x=24

43. Find the slope, if it exists.

x=-4

45. In 1195, the life expectancy of males in a certain country was 73.1 years. In

2002, it was 76.4 years. Let E represent the life expectancy in year t and let t represent the number of years since 1995.

The linear function E(t) that fits the data is:

E(t)=___ t +____

Use the function to predict the life expectancy of males in 2005

E(t)=

48. Find the slope, if it exists, of the line containing the pair of points

(9,6) and (10,-1)

49. Graph the inequality on a plane

3x+4y< or equal to 12

53. Use the intercepts to graph the equation

x+5y=10

56. Simplify: 9[74-(4-89)]

#### Solution Summary

All the 22 Revision questions are solved neatly and step-by-step.