Which function BEST expresses the linear relationship displayed by the scatter plot?

Mathematics

2 answers:

Harrizon [31]3 years ago

6 0

Answer:

Step-by-step explanation:

We want a line of best fit, which means we want to create a line that the data points will lie closest to.

One thing we can do is find the slope between the bottom-leftmost point and the top-rightmost point. This is because if we were to draw a line connecting these two, it will cut through the data quite well.

Those two points are (9, 15) and (16, 18), so the slope is change in y divided by the change in x:

(18 - 15) ÷ (16 - 9) = 3 ÷ 7 ≈ 0.4

Eliminate A and B.

Now we need to determine the y-intercept. This needs no calculations; simply look at the graph: there's no way a line cutting through the y-intercept point of (0, 18) will perfectly match the data points; instead it must be a y-intercept lower than 18. So, eliminate D.

The answer is C.

ladessa [460]3 years ago

4 0

Answer:

Step-by-step explanation:

The slope of the line of best fit should be around:

(18-15)/(16-10) = 0.5

And

The y-intercept would be less than 15

Therefore, option C is the most suitable option

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1 year ago

Y varies directly as x, if y = 8 , when x=4, find y when x =48

kaheart [24]

Answer:

y = 24

Step-by-step explanation:

8 : 4 : : y : 48