Question

Help please??
Rewrite the following equation in standard form.

y = 8/9x - 10


I know it is probably super easy, but I always need to solve a couple of problems before I get the hang of it again. :)

Answer 1

y = (8/9)x - 10
first, added by 10 to both sides giving us :
y + 10 = (8/9)x - 10 + 10
y + 10 = (8/9)x
then multiply by 9 to both sides :
9 * (y+10) = 9 (8/9)x
9y + 90 = 8x
the finally, subtracted by 9y to both sides :
9y + 90 - 9y = 8x - 9y
90 = 8x - 9y
or
8x - 9y = 90
it is the standard form of straigh line equation

Answer 2

Thank you so much! You made everything so much clearer! Thanks again! :)

Answer 3

you're welcome :)