Question

given slope
m=-6,(8,9)
what the equation of y=what ?

Answer 1

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.

Answer 2

what do i do with -6 then?

Answer 3

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

Answer 4

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

Answer 5

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.

Answer 6

how did u get 57?

Answer 7

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.

Answer 8

\[2^{2}+3^{3}-30\times40 \]

Answer 9

do i multiply the exponents?

Answer 10

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

Answer 11

yes i need to simplify it

Answer 12

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

Answer 13

is*

Answer 14

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

Answer 15

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

Answer 16

thank you :)

Answer 17

how well are you in math?

Answer 18

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