Question

f(x)=1/2x +2...how do I place this on a graph

Answer 1

It is of the form y=mx+b, where m=1/2 is the slope and b=2 is the y intercept.
Draw your axes.
Place a mark at 2 on the y axis.
From that mark, go up 1 over to the right 2 and place another mark.
Draw a long straight line through those two points.

Answer 2

for to find y-intercept take x=0; we get (0,y) and
to find x-intercept take y=0; we get (x,0)
make a stright line through those 2 points coordinats

Answer 3

still trying to figure this one out

Answer 4

got this so far... f(-4)= (-4)+2

Answer 5

my bad f(-4)=1/2(-4)+2=

Answer 6

stuck

Answer 7

@tanjung presented a valid, but completely different way to do this.
If you are following his way, then place 0 in for x. I don't know where the -4 is coming from.

Answer 8

k

Answer 9

s0

Answer 10

f(0)=1/2(0)+2=2... so y=2 when x is zero. Hence (0,2) is the point to plot.

Answer 11

f(0)=1/2(0)+2=

Answer 12

yes... that equals 2.

Answer 13

(0,2) on x axis

Answer 14

and Y??

Answer 15

(x, y) is a standard ordered pair... so (0, 2) means that the x value is 0 and the y value is 2 for this one point. That would wind up on the y axis.

Answer 16

my bad I meant second plotted point

Answer 17

The second point comes from setting y to zero. f(x) in your case.
0=1/2(x)+2

Answer 18

Subtract 2 from both sides
-2=1/2(x)
Multiply both sides by 2
-4=x
So x=-4 when y equals zero. That gives you a point (-4, 0), which is 4 to the left on the x axis.

Answer 19

got it...

Answer 20

Awesome!

Answer 21

It should look a little like that.

Answer 22

Thank you...Had a long day and my brain is on pause...lol

Answer 23

You're very welcome.