Finding Roots From a Graph

[carmine kestrel]

I need help 😭🙏

[tawdry valley]

@carmine kestrel so uh the roots of equations means those points on graph’s which touch y=0(i.e x axis)

[viral kestrel]

A solution, root, or zero of a function is possible value of x equal to 0

You can also call it the x-intercept, or the place where the function crosses the x axis

In this case, the graph crosses the x axis at -7, 0, 5, 8

So the solution is:

,tex $x \in {-7, 0, 5, 8 } $

[onyx wolf]

@viral kestrel

[carmine kestrel]

oh wow thanks

[viral kestrel]

,tex Or $x = -7, 0, 5, 7$

[onyx wolf]

@viral kestrel

[viral kestrel]

@carmine kestrel most teachers will accept one of the two formats

[carmine kestrel]

ohh

wait one more thing

how do i find domain and range on a graph

is it just the x values and y values or ?

[viral kestrel]

Domain is all possible x values

Range is all possible y values

[simple reef]

really? is that the definition of domain
im always so confused b/w domain and range
mind explaining me?

[opal socket]

domain finds the maximum and minimum values of x

and range is for y

but sometimes the notation is different not just the max and min

[thorny basin]

Yeah that's misleading

What @viral kestrel said is correct

There isn't really anything else to explain

Domain is possible inputs for your function, range is possible outputs

[simple reef]

thanks i think i need to solve more ques related to that