Answer:
4 x 54 x y = x
Step-by-step explanation:
Answer:
y = (-5/2)x + 1
Step-by-step explanation:
y = (-5/2)x + c
When x = 2, y = -4
-4 = (-5/2)(2) + c
-4 = -5 + c
c = -4 + 5 = 1
y = (-5/2)x + 1
Answer:
-2x^2 + 3x -1
Step-by-step explanation:
y = ax^2 + bx + c
(0,-1):
-1 = a(0)^2 + b(0) + c
-1 = 0 + 0 + c
-1 = c
(1,0):
0 = a(1)^2 + b(1) + c
0 = a + b + c
(2,-3):
-3 = a(2)^2 + b(2) + c
-3 = 4a + 2b + c
Replace c with -1
0 = a + b -1
1 = a + b
-3 = 4a + 2b -1
-2 = 4a + 2b
-1 = 2a + b
Solve:
2a + b = -1
-1a - b = -1
a = -2
2a + b = -1
-2a -2b = -2
-b = -3 divide both by -1: b = 3
a = -2; b = 3; c = -1
y = ax^2 + bx + c or y = -2x^2 +3x -1
Answer:
Step-by-step explanation:
-1 up and -3 down i think
