ACTIVIDADES -8
1.
2.
3.
4.
5.
Comprueba que la función f(x) = 2(x+ 3) — 5(x+ 1) es li-
neal. Calcula la pendiente y la ordenada en el origen.
Representa la recta que pasa por los puntos A(l, 4) y
B(3, 0). Calcula su pendiente. ¿Es creciente?
Asocia en tu cuaderno cada gráfica con su fórmula.
a)
6. Asocia en tu cuaderno cada tabla con su función lineal
correspondiente. Indica la pendiente y la ordenada en el
origen. ¿Cuales son constantes? ¿Cuales son de propor-
cionalidad directa?
a)
x
b)
x
-4
-1
-4
14
o
10
4
1
4
6
8
2
8
2
c)
x
d)
x
-4
6
-4
-3
6
5
4
6
4
13
8
6
8
21
1
A. f(x)
4
D. = 10 -x
A. y=2
C. y=-2x+2
7.
En esta tabla de proporcionalidad directa hay dos errores
en los valores de y. Encuéntralos y corrígelos.
Calcula las imágenes de —1, 10 y —1,5 en la función de
proporcionalidad directa f(x)
- -1,5x.
Si g(x) es una función de proporcionalidad directa, com-
pleta la siguiente tabla en tu cuaderno.
x
2
3
5
7
8
12
12
16,8
15
21
x
g(x)
-7,5
1
4
10
8,5
smSaviadigital. com
Practica con funciones lineales.
PRACTICA
251

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

four boxes of pizza

hope this