Let y= mx-2 be the tangent line to y=x^2-4x+2 at x=a.
Then slope, 
Hence the equation is y=(2a-4)x-2
Let's find y-coordinate at x=a using tangent line and curve.
Using tangent line y at x=a is (2a-4) a -2 
Using given curve y-coordinate at x=a is 
Let's equate these 2 y-coordinates,



a=2 or -2.
If a=2, 
If a=-2,
Hence m values are 0 and -8.
Car gets 22 miles per gallon
If you drive "m" miles then
(m/22) shows how many gallons of gas you will use.
Answer:
obtuse scalene
Step-by-step explanation:
Three different sizes.
the solutions of the equation are a)0 & c)2