Question

HELP

Answer 1

The graph shows Linda's math scores versus the number of hours spent doing math homework.

A graph titled Lindas Math Scores shows Hours of Practice in a Week on x axis and Math Scores on y axis. The x axis scale is shown from 0 to 5 at increments of 1, and the y axis scale is shown from 0 to 50 at increments of 5.The ordered pairs 0, 10 and 0.5, 15 and 1, 20 and 1.5, 18 and 2, 25 and 2.5, 26 and 3, 29 and 3.5, 32 and 4, 35 and 4.5, 45 and 5, 50 are shown on the graph. A straight line joins the ordered pairs 0, 10 and 5, 45.7.

What will most likely be Linda's approximate math score if she does math homework for 7 hours a week?

62.5 points
77.5 points
82.5 points
93.5 points

Answer 2

@Michele_Laino

Answer 3

@Michele_Laino

Answer 4

the line of best fit, passes at points \((0,10)\) and \((2,25)\)
first step:
please write the equation of that line of best fit

Answer 5

please use the coordinates of the two points above

Answer 6

its C ?

Answer 7

I'm sorry, option C is a wrong option

Answer 8

so B

Answer 9

hint:
the equation of the line of best fit is:
\[y = \frac{{15}}{2}x + 10\]
please replace \(x=7\), what do you get?

Answer 10

a

Answer 11

that's right!
The predicted values are given by the \(y-\) values of such equation above