Question

the equation for the line of best fit is $y = -x + 25$. according to the equation, which of these statements is true?
liam probably typed about 25 words incorrectly at the start of the typing class.
liam would probably type about 25 words incorrectly after 10 weeks of the typing class.

Explanation:

The line of best fit is $y = -x + 25$. At the start of the class, $x$ (time/weeks) is 0. Substituting $x=0$ gives $y = -0 + 25 = 25$, meaning the initial incorrect words are ~25. For the second statement, $x=10$ gives $y = -10 + 25 = 15$, not 25. Thus the first statement is true.

Answer:

Liam probably typed about 25 words incorrectly at the start of the typing class.