Andres knows the proportions for pints per gallon and cups per pint. how could andres use the proportions to find the number of gallons per cup?

The proportions for pints per gallon and cups per pint is known to Andrew.

These proportions can be used by Andrew to convert gallons to cups.

Andrew will first convert gallons to pint this can be done by multiplying the number of gallons he needs to convert to the conversion unit.(1 gallon =7.57082 pints) THen he will convert pint to cups by multiplying the number of pints by the conversion unit.(1pint = 2.1 cup).

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: