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# Equations and lines

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33) Translate to an algebraic expression
The product of 33% and some number
The translation is ___? Type the percentage as a decimal, use d to represent some number
35)solve by the elimination method
7r-6s=2
6r+7s=111
What is the solution of the system________? (Type an ordered pair. Type an integer or a fraction. Type N if there is no solution Type I if there are infinitely many solutions )
36) The equation y= - 1777x+27,153 can be used to predict the number y of gun deaths in the United States x years after 2000, that is, x=0 corresponds to 2000, x=3 corresponds to 2003, x=6 corresponds to 2006 and so on. Predict the number of gun deaths in 2006 and 2009. In what year will the number of gun deaths be 7606?
The predicted gun deaths in 2006 will be__?__
The predicted gun deaths in 2009 will be __?___
The predicted number of gun deaths will be 7606 in what year ___?__
38)
Evaluate

40) Decide whether the pair of lines is parallel, perpendicular, or neither
5x+4y=3
5x+4y=6
a. Parallel
b. Perpendicular
c. Neither

49) Find the slope, if it exists, of the line containing the pair of points
(1,3) and (9-4)
The slope m=______ ( simplify your answer, type an integer or a fraction use N if the slope is undefined)
10. Solve by the elimination method
2x+3y=5
4x+6y=10
What is the solution of the system? Type an ordered pair type an integer or a fraction

https://brainmass.com/math/basic-algebra/equations-lines-180414

#### Solution Preview

33) Translate to an algebraic expression
The product of 33% and some number
The translation is _0.33d __ Type the percentage as a decimal, use d to represent some number
35)solve by the elimination method
7r-6s=2 (1)
6r+7s=111 (2)
We can eliminate s:
Multiply 7 to (1)
(3)
Multiply 6 to (2):
(4)
(3) + (4)

Substituting 8 for r to equation (2) gives

What is the solution of the system_(8, 9)_______ (Type an ...

#### Solution Summary

This is a collection of algebra problems, including translating words to expressions, solving by elimination, interpreting and using equations, and slope.

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