Write equations for each line given the following points. Remember, you must first find the slope and then determine the y-intercept, then write out the equation in slope-intercept form. Remember if the y-intercept b is zero, then there is no need to put it there, and if the slope is 1, then you only need to write x, not 1x. 11. (-5, -2) and (-1, -6)

12. (3, 2) and (5, 7)

13. (-3, -2) and (-1, -1)

14. (4, 7) and (2, 3)

15. (-3, 2) and (3, -2)

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb