Question

y = \square x + \square

Explanation:

Step1: Identify y-intercept

The line crosses the y-axis at $(0, 4)$, so $b=4$.

Step2: Calculate slope (rise over run)

Use points $(0,4)$ and $(1,9)$:
$\text{slope } m = \frac{9-4}{1-0} = 5$

Step3: Write slope-intercept form

Substitute $m=5$ and $b=4$ into $y=mx+b$.

Answer:

$y = 5x + 4$