Astudent find the slope of the line between (8,17) and (1,4)
she writes 17-4/ 1-8. what mistake did she make

For this case we have that by definition, the slope of a line is given by:

According to the data we have the following points:

Substituting we have:

So, the slope is

The student's mistake was to erroneously subtract the "x" coordinates from the points

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1

noncoplanar points are points that do not lie on the same line.