Question

The graph shows the savings in Andre's bank account.

Explain what the vertical intercept represents in this situation.

Answer 1

The initial amount

Explanation:

Let's find equation of line

• (0,40)
• (4,60)

Slope

`\\ \tt\hookrightarrow m=60-40/4=5`

Equation in point slope form

`\\ \tt\hookrightarrow y-40=5(x)`

`\\ \tt\hookrightarrow y=5x+40`

Answer 2

The y-intercept represents the initial (opening) amount in Andre's bank account: $40

Explanation:

The y-intercept represents the initial (opening) amount in Andre's bank account: $40