Question

Please help! Same is reading Harry Potter and the chamber of secrets. He is currently on page 19. After reading for 40 minutes he is on page 339.

Slope:
Y-intercept:
Equation:

Answer 1

Here the co-ordinates are

• (0,19)
• (40,339)

Slope:-

`\\ \tt\hookrightarrow m=(339-19)/(40-0)=(320)/(40)=8`

Equation of line in point slope form

`\\ \tt\hookrightarrow y-y1=m(x-x_1)`

`\\ \tt\hookrightarrow y-19=8(x)`

`\\ \tt\hookrightarrow y-19=8x`

• Convert to slope intercept form y=mx+b

`\\ \tt\hookrightarrow y=8x+19`

• y intercept=b=19

Answer 2

y = 8x + 19

Explanation:

Slope:

• 
  `(339-19)/(40-0)`
• 
  `(320)/(40)`
• 
  `8`

Slope: 8

Y-intercept:

Input points

• 
  `339 = 8(40) + b`
• 
  `339 = 320 + b\\`
• 
  `b = 19`

Y-intercept: 19

Equation:

y = 8x + 19

-Chetan K