Question

Help pleaseeee

John-Mark recorded the stats for several baseball pitchers. He made a scatterplot showing the number of games they played and the percentage they lost. Which line is the best fit for this data?


y - 20 = 10(x - 9)


y + 20 = 10(x + 9)


y - 20 = -10(x - 9)


y + 20 = -10(x + 9)

Answer 1

i beleive it is the third answer

Answer 2

Option C. y - 20 = -10(x - 9)

Explanation:

We will choose one point on the graph and plug in the coordinates in each option to find the correct equation.

Point in the graph is (3, 80)

Now we plug in the values in the options given.

A). y - 20 = 10(x - 9)

y - 20 = 10(3 - 9)

y = 20 + 10(-6)

y = 20 - 60 = -40 ≠ 80

So this option is not correct.

B). y + 20 = 10(x + 9)

y + 20 = 10(3 + 9)

y + 20 = 10×12 = 120

y = 120 - 20 = 100

So this option is not correct

C. y - 20 = -10(3 - 9)

y - 20 = -10(-6) = 60

y = 20 + 60 = 80

So the given option is correct.

D. y + 20 = -10(x + 9)

y + 20 = -10(3 + 9)

y + 20 = -10×12 = -120

y = -120 + 20 = -90

So this option is not correct.

Option C is the correct option.