# determine 3 points on the graph of each linear function.?

please EXPLAIN me how exactly u got this points:

( -1,5) (0,6) (1,7)

from:

f (x) = x+6

i need to learn this cos this will be our test this coming saturday. im in DLP.

Relevance

It helps if you graph the line. So for the function f(x)=x+6, the slope is up 1, over 1 because slope is rise/run. The plus 6 at the end is the y-intercept, so you know already that one of the points is at (0,6). It helps to plot the y-intercept first, and go from there by using the slope of the line. To get the point (-1,5), go down 1, over 1 from (0,6). To get (1,7), just go up 1, over 1, and you can continue this to get other points like (2,8).

• Anonymous
7 years ago

This is called a table of values. You select a value of x and put it in the formula to compute a value of y.

x y

-1 5

0 6

1 7

Then you plot each point on graph paper by finding the vertical line that passes through x=-1 and marking a point at the horizontal line that passes through y=5, and the same for each point you have computed. It looks like this: https://www.wolframalpha.com/input/?i=plot+y%3Dx%2...

You can bookmark that site to check all your homework. Also bookmark http://www.sugarscript.com/scripts/chars.php to copy & paste special characters.

• When you are giving a point, f(x) takes the place of y. So you take each first number and add 6 to it to get the second number. Those are only three of the infinitely many points. You just have to choose any three numbers for x then add 6 to get y.

• so just plug in each one:

5=-1=6

6=0+6

7=1+6

so your x's will be -1,0,1

and f(x) is basically another term to say y=