The situation you are describing can be written as y=2x, or in this case t=2f, for every fragrance purchased there are 2 ounces of lotion that are given. Since the ounces of fragrance are not shown in this question, we can only make the graph on the ounces of lotion for every fragarance purchased. The points of the graph represent that for every fragrance bought, there is twice the amount of that in ounces of lotion. In summary, the rule is t=2f where t would equal purchases of fragrance and f would equal the ounces of lotion.
(If there is any more you would like to add to the question I can answer that.)
Multiply the first equation by -2 to eliminate a variable so it becomes: -12x+8y=48 4x-8y=-32 Add them together. -8x=16 x=-2 Plug it in one equation. 6(2)-4y=-24 12-4y=-24 -4y=-12 y=3 Ordered pair is: (-2,3)
3/7 = 9/x cross multiply because thats how u solve proportions (3)(x) = (7)(9) 3x = 63 x = 63/3 x = 21
and if u will notice : 3/7 and 9/21 ....9/21 reduces to 3/7....so these are equivalent fractions...because proportions are nothing but equivalent fractions