Sparkle Cleaners uses 2
3
of a jug of window cleaner in 3 weeks. How much window cleaner do they use in 1 week?

2/3 jug = 3 weeks

3*(2/3 jug) = 3*(3 weeks) ... multiply both sides by 3

2 jugs = 9 weeks

2/9 jugs = 9/9 weeks ... divide both sides by 9

2/9 jug = 1 week

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?