Answer:
16
Step-by-step explanation:
start off with
y = 2.5x - 1.5
plug in x = 7
so it's now
2.5(7) - 1.5
which is
17.5 - 1.5
=
16
The required value of y at x = 7 on the line is 16.
Given that,
A data set consists of the following data points (2,4)(4,7)(5,12)
The line best fit has the equation y=2.5x-1.5. What does this equation predict for a value of x=7 is to be determined
A line can be defined by the shortest distance between two points is called as a line. The standard equation of the line is y = mx +c
here,
According to the data points, (2,4)(4,7)(5,12), the equation that best fits has the expression as,
y = 2.5x - 1.5
Where the slope of the line m = 2.5 and y-intercept is c = -1.5
According to the question,
At x = 7, what is y is to be determined
put x = 7 in the equation of the line
y = 2.5 * 7 - 1.5
y = 17.5 - 1.5
y = 16.0
Thus the required value of y at x = 7 on the line is 16.
Learn more about lines here:
brainly.com/question/2696693
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