# algebra

Will someone please look over these? I am so lost on these.
1. find the domain of p(x)=xsquared+10- I said {x|x is a real number

2. find the intercepts of 3x+2y=6- I got (0,3) and (2,0)

4.find the equation of (-6,-6)and (6,6)- got y=x

7. slope and y-intercept of x+2y=4- got slope of 1 and (0,2) and (4,0)

9. are the lines 4x+6=y and 2y=8x-5 parallel? got yes

10. slope of (-13,-16) (-18,-17)- got 1/5

12. find the equation of m=-8,(6,7)- got y=-8x-41

13. equation of (7,9);x+5y=3 - got y=-1/5x+52/5

15. is 6x-5y=9 and 6y-5x=7 perpendicular? I put no

17. slope and y-intercept of 5x=9y+36- got 5/9 for slope and (0,-4)

21. slop and y-intercept of -7/6x-5/3- I got slope of -7/6 and (0,-5/3)

If I missed any of these, will you please explain them to me? I need to understand these and am having a real hard time.

1. 👍 0
2. 👎 0
3. 👁 241
1. most are correct, you seem to be making small careless errors.

#7 slope = -1/2

#12, the given point does not satisfy your equation.
let the equation be y = -8x + b
sub in (6,7)
7 = -8(6) + b
55 = b
so y = -8x + 55

#13 correct if the new line is supposed to be parallel to the given line, it did not say so.

#21 seems to be a typo
did you mean y = -7/6x-5/3 ?
If so, then correct

1. 👍 0
2. 👎 0
posted by Reiny

## Similar Questions

1. ### Math

The domain of g(x) is -1< x < 9 What is the domain of g(x - 4) I know the Domain: ?< x

asked by Rai on October 10, 2014
2. ### Math

Find the requested function and state its domain: f(x)= 4x+3 g(x)=4x-5 Find f/g and its domain. So I did 4x+3/4x-5, so the 4x's cancel out and 3/-5 is left. So my answer is 3/-5. Is this correct Now I just need to find the domain

asked by Hannah on October 7, 2010
3. ### Math

Find the requested function and state its domain: f(x)= 4x+3 g(x)=4x-5 Find f/g and its domain. So I did 4x+3/4x-5, so the 4x's cancel out and 3/-5 is left. So my answer is 3/-5. Is this correct Now I just need to find the domain

asked by Hannah on October 7, 2010
4. ### math

the function f is defined: f(x)= x+3 if -2

asked by mercedes on March 26, 2013
5. ### Algebra

The function h is is defined below. h(x)=48x^2+ 12x - 16 Find all values of x that are NOT in the domain of h. If there is more than one value, separate them with commas. I'm lost.

asked by Rachal on May 18, 2011
6. ### Small Group Communication

Regulating participation, climate making, and maintaining mutual respect are all part of the ___________. task domain, interpersonal domain, procedural domain, work domain, or life skills domain. I believe this is the life skills

asked by Jazmyne on December 29, 2011
7. ### Pre-Calc

Suppose that f has a domain of A and g has a domain of B. (a). What is the domain of f + g? (b). What is the domain of fg? (c). What is the domain of f/g? Is there a mathematical rule or theorem for this type of question?

asked by Stockton on August 14, 2013
8. ### Algebra

find the domain and range of y=f(x) {4 if -6

asked by Kayla on November 24, 2014
9. ### college alg

for the given functions f and g find the following and state the domain of each result f(x)=3x+1/8x-9; g(x)=5x/8x-9 (they look like fractions) A) (f+g)(x)=? B)domain of (f+g) c) (f/g)(x)=? d) domain of f/g? please show work

asked by ALLI on September 5, 2012
10. ### calculus

for the given functions f and g, find the following and state the domain of each. f(x)=square root x; g(x)=5x-1 a. (f*g)(x)= ? what is the domain of f*g? b. (f/g)(x)=? what is the domain of f/g? please show work

asked by anonymous on January 1, 2013
11. ### Math

for the given functions f and g find the following and state the domain of each result f(x)=3x+1/8x-9; g(x)=5x/8x-9 A) (f+g)(x)=? B)domain of (f+g) c) (f/g)(x)=? d) domain of f/g? please show work

asked by Anonymos on September 4, 2012

More Similar Questions