## anonymous 5 years ago given slope m=-6,(8,9) what the equation of y=what ?

1. anonymous

Use the general form of an equation of a line:$y - y_1 = m(x-x_1)$ where y_1 is your given value of y, and x_1 is your given value of x. Plug the three given values into the equation and solve for y, giving your equation.

2. anonymous

what do i do with -6 then?

3. anonymous

Plug -6 into where m is, so that you get $y - 9 = (-6) • (x - 8)$ after plugging each given into the equation.

4. anonymous

my mind is fried from this pellet all day, so hen how do i multiply -6 with x-8? -6x-14?

5. anonymous

Kinda, you have the right concept but just need to carry out the multiplication more carefully. y - 9 = -6x + 48, which leaves y = -6x + 57.

6. anonymous

how did u get 57?

7. anonymous

Add 9 to the each side, so you'll get y - 9 + 9 = -6x + 48 + 9, on the left hand it simplifies to y, and on the right hand it simplifies to -6x + 57.

8. anonymous

$2^{2}+3^{3}-30\times40$

9. anonymous

do i multiply the exponents?

10. anonymous

Erm..are you trying to simplify the expression into a value?

11. anonymous

yes i need to simplify it

12. anonymous

my mind id drawing a blank lol sorry to bother you if i am...i appreciate the help lol

13. anonymous

is*

14. anonymous

Lol, don't worry about it. I don't really think there is an easy way of shortening it, but all you have to do is calculate 2^2 (which is 4), 3^3 (which is 27), and 30 x 40 (which is 1200). Add 4 to 3, and subtract 1200 to get your answer, which is -1,169 if I haven't made a silly mistake along the way. :P

15. anonymous

thank you thats what i was thinking was done but i just thought i may have done something wrong

16. anonymous

thank you :)

17. anonymous

how well are you in math?

18. anonymous

You're very welcome :) I'm not sure how good my skills are, but for reference I'm in AP calculus.