Question

(a): How many miles does the train travel per gallon?
(b):What is the slope of the graph?

Answer 1

since the graph has direct variation as data in x axis increases y also increases.

so we need to find how many miles travelled per galloon .

we distance travelled per gallon =total distance travelled/galoons of fuel used.

`Distance travelled per gallon=200 miles/400 gallons=0.5 litres travelled per gallon`

for part b) slope=rise/run

`m=(y2-y1)/(x2-x1)`

`image`

`m=(400-0)/(200-0)=2`

slope of the graph is 2