3.- Una locomotora S/333 consume 39.9 litros de diésel para mover, en terreno plano, una carga de 1000 toneladas a 10 km
de distancia. Suponiendo que el terreno es plano, ¿Cuántos
litros de diésel consumirá para mover la misma carga a 80 y 200
km de distancia? Si ha consumido 478.8 litros, ¿qué distancia
ha recorrido?

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

7

step-by-step explanation:

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

the olimpics is not going to wokk out

step-by-step explanation: