Answer:
1. C
2. D
3. C
Hope that helps!
Step-by-step explanation:
Answer:
I guess that the question should say:
You need 3 scoops of powder lemonade mix to make two quarts of lemonade. How many scoops of powder lemonade mix are needed to make 3 gallons?
3 gallons = 12 quarts
if you need 3 scoops top make 2 quarts, then you will need (12/2) x 3 = 18 scoops of lemonade powder mix to make 3 gallons of lemonade.
Add them to eliminate x terms
x+3y=-7
<u>-x-7y=19 +</u>
0x-4y=12
-4y=12
divide by -4
y=-3
sub back
x+3y=-7
x+3(-3)=-7
x-9=-7
x=2
(x,y)
(2,-3)
Answer:x =24
Step-by-step explanation: If we reverse that we will get x= 32x3/4 which is 24
Answer:
y = x + 7
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
here m = , hence
y = x + c ← is the partial equation
to find c substitute (4, 9) into the partial equation
9 = 2 + c ⇒ c = 9 - 2 = 7
y = x + 7 ← equation in slope-intercept form