Question

the equation for the line of best fit is $y = x + 3.3$.
which statements are supported by this equation? select all that apply.

• on average, a group member produced about 3.3 pages per day of writing.
• by writing for 20 days, a group member would likely complete around 23 pages.
• a group member who wrote daily for the full two months would likely complete over 60 pages.
• a group member who completed 33 pages likely wrote for about 36 days.

Explanation:

Step1: Assume x=days, y=pages

The line of best fit is $y = x + 3.3$.

Step2: Check 20 days

Substitute $x=20$: $y=20+3.3=23.3≈23$. Supported.

Step3: Check two months (60 days)

Substitute $x=60$: $y=60+3.3=63.3>60$. Supported.

Step4: Check 3.3 pages/day

The slope is 1 (1 page/day), intercept=3.3. Not 3.3 pages/day. Unsupported.

Step5: Check 33 pages

Set $y=33$: $33=x+3.3→x=29.7≈30≠36$. Unsupported.

Answer:

By writing for 20 days, a group member would likely complete around 23 pages.
A group member who wrote daily for the full two months would likely complete over 60 pages.