How do you find the slope of the

Shaylee House

Shaylee House

Answered question

2022-04-12

How do you find the slope of the tangent line to the graph at given point and give an equation of the tangent line f(x)=32x at (1, 3/2)?

Answer & Explanation

Raina Blackburn

Raina Blackburn

Beginner2022-04-13Added 10 answers

This function is a linear function. Its graph is the straight line y=32x.
The tangent line can be described as the limit, as a second point approaches
(1,32), of the slope of secant line.
For every point on the graph, the secant line is the same as the graph of the original function, y=32x.
Therefore, the tangent line is the same, y=32x.
If we want the details:
The slope of the tangent line is given by
limh0f(1+h)f(1)h=limh032(1+h)32(1)h
=limh032hh
=32
The line through the point (x1,y1) with slop m=32 can be written
yy1=m(xx1)
So we have
y32=32(x1) Solving for y to get slope intercept form, we get
y=32x

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