Question

Find the slope of the line in slope-intercept form using y=mx+b

Answer 1

From the graph, the y-intercept is -70

Hence b = -70

x-intercept is 70

Therefore with the two points (0, -70) and (70, 0), we can find the gradient of the line

m is the gradient.

`m=(-70-0)/(0-70)=(-70)/(-70)=1`
`\begin{gathered} \Rightarrow y=(1)x+(-70) \\ \Rightarrow y=x-70 \\ \end{gathered}`

Hence the equation of the line is:

y = x - 70