Question

Which graph could be used to show the situation described?

the temperature decreases by 0.5 degrees every hour.​

Answer 1

I think it is the second one

Explanation:

Answer 2

Option (2) [Graph on the top right]

Explanation:

To find the temperature decrease by 0.5 degrees every hour we will find the slopes of the lines given in every option.

Option (1) [Top left graph]

Slope =
`\frac{\text{Rise}}{\text{Run}}`

=
`(-20)/(2)`

= -10

Option (2) [Top right]

Slope =
`(-2)/(4)`

= -0.5

Option (3) [Bottom left]

Slope =
`(-2)/(2)`

= -1

Option (4) [Bottom right]

Slope =
`(-60)/(5)`

= -12

Therefore, Graph given in option (2) will represent the decrease in temperature by 0.5 degrees per hour.