Question

accuracy of hansens watch
what is the equation of the line in slope - intercept form?
write your answer using integers, proper fractions, and improper fractions in simplest form,

Explanation:

Step1: Identify y-intercept

The line crosses the y-axis at (0, 20), so $b=20$.

Step2: Calculate slope

Use points (0,20) and (10,100):
$$m=\frac{100-20}{10-0}=\frac{80}{10}=8$$

Step3: Write slope-intercept equation

Substitute $m=8$ and $b=20$ into $y=mx+b$.

Answer:

$y=8x+20$