# math

posted by .

I posted this question yesterday and I got a response that is correct but I still don't understand how he got it. What did he do with the 2?

how do i find the slope of the curve at the indicated point?

f(x)= absolute value of x, x=2

math - bobpursley, Wednesday, September 16, 2009 at 7:50pm
at x=2, abs(x)= x

f(x)=x
slope= 1

• math -

f(x) = │x│
or
y = │x│

resulting in two linear functions
y = x , y = -x , where y ≥ 0

the graph will be a V-shape with the vertex at the origin.

here are a couple of ordered pairs,
for x>0, (1,1),(3,3),.. (12,12) etc
for x< 0
(-1,1),(-3,3) etc

so for x>0 the slope is +1
for x<0 the slope is -1

## Similar Questions

1. ### pH- from saturday

i posted this question previously and got help however im still having some confusion. can u clarify ?
2. ### Health

I posted this question yesterday and I got confused. The determinant of total energy requirement that may most appropriately be manipulated in a weight loss program is: 1. basal metabolic rate 2. physical activity 3. dietary thermogensis …
3. ### Geometry

I HAVE A QUESTION. When I post a question and there is now response to it does it means that my answer to my questions are correct?
4. ### algebra

Will someone please look over these? I am so lost on these. 1. find the domain of p(x)=xsquared+10- I said {x|x is a real number 2. find the intercepts of 3x+2y=6- I got (0,3) and (2,0) 4.find the equation of (-6,-6)and (6,6)- got
5. ### Algebra/no response yesterday

I have a few problems I need you to take a look at and tell me if I arrived at the right answer. 1. I am to use the intercepts to graph the equation x+3y=6 I used the formula y=mx+b using 3 and -6 for x I got these as my ordered pairs …
6. ### rational number math help

compare use < > = 1) -4/9 - 1/4 i got -0.6 < -0.25 2) -1 -4/5 i got: -1 > -0.8 3) -7/8 -1/8 I GOT: -0.875 < -0.125 4) -1/3 -5/6 I GOT: -0.333 > -0.833 5) -2/5 - 1/10 i got: -0.4 < -0.1 6) -2/8 - 1/4 I GOT : -0.25 …
7. ### Chemistry

This question was posted: At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.56. What is the Ksp of the compound at 22 °C?
8. ### math

i am stuck on this problem: Find the slope and y-intercept of the line represented by the table of values below, then answer the question that follows. x y -10 -310 5 80 12 262 19 444 What is the sum of the slope and the y-intercept?
9. ### Math for Reiny

your derivative is correct. now just plug in x = π/2 to get the slope remember that tan(π/2) is undefined, BUT cot (π/2) = cos(π/2) / sin(π/2) = 0/1 = 0 so slope = -csc^2 (π/2) = 2 I calculated and got …
10. ### Math for Reiny

your derivative is correct. now just plug in x = π/2 to get the slope remember that tan(π/2) is undefined, BUT cot (π/2) = cos(π/2) / sin(π/2) = 0/1 = 0 so slope = -csc^2 (π/2) = 2 I calculated and got …

More Similar Questions