Answer: Y = - 4 & x = 1
Step-by-step explanation:
Systems of linear equations: We will solve this using substitution but you can use 2 more ways.
7x + 2y = -1
2x - 4y = 19
Leave X alone first: -------------------
10x - 2y = 18
10x/10 = 18 + 2y/10
x = 9/5 + y/5
Solve for y:
7(9/5 + y/5) + 2y = -1
63/5 + 7y/5 + 2y - 1
63/5 + 7y/5 = 10y/5 = -1
63/5 + 17y/5 = -1 (-5/5)
17y/5 = -68/5 (cancel the 5)
y = -68/17
y = - 4 (Your Answer)
7x + 2(- 4) = -1
7x + (-8) = -1
7x = 7
x = 1
CHECK=
7(1) + 2(-4) = -1
7+ (-8) = -1.
-1=-1
Answer:
True, True, False
Step-by-step explanation:
1 is true because y values are increasing as x increases for both
2 is true because b's rate of change is 2 and a's rate of change is 0.25, so 2/0.25=8.
3 is false because a's y intercept is at 1
Your answer to 2/3x-4= -2 would be
x=3, or letter D
Answer: betina or adelita
Step-by-step explanation: hope it helps
Answer:
x = 22/21 , y = 8/3
Step-by-step explanation:
