Seguimiento de proyecto de matemáticas
1.
==
=
2
0=2(-4)+b 0=-8+b 8=b
8=2(0) + b 8=0+b
y=2x+8
8=b 2. Encuentra la ecuación para
M=-4
3, -3
y= - 4x+ 9
X, y
Y= mx+b
Y= -4x+b -3=-4(3) + b -3= -12 +b -3+12= b 9=b X 3 -3 Y -3
-8
21 41
3. A.
x + x = 2x-17 3
4
4x +3x = 2x-17 12
7x =2x – 17 12
7 – 24x = -17 12
-17x = -17 12
X= - 17(12) 17 X= 12
B. 2 - x -1 = 2x – 1 - 4x – 5 40
4
8
2 - x -1 = 16x -8 -16x - 20 40
32
2 - x -1=
-8- 20
40
2 - x -1= 40
32
- 28 32
80 – x – 1 = - 28 40
32
79x = - 28 40
32
32(79x) = -28 (40) 2528x =-1120
X= -1120 = -560 = -280 = -140 = -70 2528=
1264 632 316 158
4. A a. 6x – 2y + ƶ = 24 b. 2x + 5y - 2 ƶ = -14 c. X – 4y + 3 ƶ = 26
A + (-3) (b) 6x – 2y + ƶ = 24 -6x – 15y + 6 ƶ= 42 0- 17y + 7 ƶ = 66
Y= 66- 7 ƶ 17
A + (-6) (c)
6x – 2y + ƶ = 24 -6x + 24y - 18 ƶ = -156 0+ 22y - 17 ƶ = -132
Y= 17 ƶ - 132 22
66- 7 ƶ = 17 ƶ - 132 17
22
22(66- 7 ƶ) = 17(-132 + 17 ƶ)
1452 -154 ƶ = -2244+289 ƶ 1452 + 2244 = 289 ƶ + 154 ƶ 3696 = 443 ƶ
Ƶ= 3696 = 8,4 443
Y= 17 ƶ – 132 22
Y= 17(8,4) – 132 22
Y= 142,8 – 132 22
Y= 10,8 = 0,5 22
X – 4y + 3 ƶ = 26
X – 4 (0,5) + 3 (8,4) = 26 X – 2 + 25,2 = 26 X= 26 – 23,2 X= 2,8
Prueba
X – 4y + 3 ƶ = 26
2,8 – 4 (0,5) + 3 (8,4) = 26 2,8 – 2 + 25,2 = 26 2,8 + 23,2 = 26 26=26
B. a.12x –y – 6x -24 +2z = z b.5x +4x +18- 4z = 2x -2z +4 c.3x -4y-26=2x -3z
a.6x – 2y + ƶ = 24 b. 2x + 5y - 2 ƶ = -14 c. X – 4y + 3 ƶ = 26
A.Y= 5
B.Y= 3x+2 Y=3 (1) +2
Y= 3(2) + 2
Y= 3 + 2
Y= 6+2
Y= 5
Y= 8
X 1
2
3
Y 5
8
11
Y= 3(3) + 2 Y= 9+ 2
Y= 11
C. y= x/3
Y= 1/3
y= 2/3
y= 3/3
Y= 0,3
y= 0,6
y= 1
X
1
2
3
Y
0,3
0,6
1
D. x= 4
Grafico plano cartesiano
Solución: