Answer:
.
Step-by-step explanation:
As we know ,
The slope of a line that passes through
and
is given by :

The slope of a line that passes through (1 , 7K), and (-3,5K) =

Hence, the slope of the given line is
.
Step-by-step explanation:
a) determine the rate in km/L
==> 9.5 L/100km = 10.526316 km/L
b) how far can the car travel with 475L petrol
==> 0.210526315789473km/l
c) how many litres of petrol do they need to travel 350 km
==>Liters per km (l/km)2.86×10-3
Liters per 10 km (l/10 km)0.03
Liters per 100 km (l/100km)0.29
Kilometer per liter (km/l)350
Answer:
a c and g
Step-by-step explanation:
we have the function
y=f(x)=x^2
the domain is all real numbers -------> interval (-∞, +∞)
the vertex of the vertical parabola is the origin (0,0)
the parabola opens upward
the vertex is a minimum
so
the range is the interval [0, ∞)
The answer to the problem is x= -4