Math Help...?

Question

I don't understand this: For each of the following equations, find the x-intercept and y-intercept and sketch the graph.
y=x+2

How do i do this?

Answer 1

I sketched this for u
http://i55.photobucket.com/albums/g149/delta_bravo_1kilo/graph.jpg

Answer 2

It's way easier for you to understand the concept of x- and y-intercepts if you do the plotting first.

Assign values for x and solve for y. Be sure to assign x = 0. The point where x = 0 is actually the y-intercept. The very reason it is called y-intercept is that it intercepts/crosses the y-axis at this point. See your graph.

Similarly,assign values for y, still making sure to assign y = 0. The point where y = 0 is that on which your line/sketch intercepts/crosses the x-axis and thus called the x-intercept. See your graph.

You can actually get the values of x-intercept by just assigning y = 0 then compute for x.Conversely, assign x = 0 and compute for the y-intercept.

But, as previously suggested, it is best that you do the graph/sketch first (especially if you're new to this) to get a clearer grasp of the concepts.

Answer 3

The Y intercept is the point where x = 0.

If Y = 0 and Y = Y+2 -- then you get y = 2. So, the Y intercept is (0,2). Graph this point.

The X intercept is where Y = 0. If Y = 0 and Y = X+2 -- then you get 0 = X+2 -- so X will have to equal -2. That means tha tthe X intercept is (-2, 0). Graph this point.

Not draw a straight line through these two points. This is the graph of Y=X+2

Answer 4

Stop Spamming the channel with this question!

X intercept is the point on the graph where the line intersects the X axis, which can only happen when y=0. So, if you plug 0 in for y and solve the equation you get the x intercept (-2). The same applies for finding the y intercept (2).

Again, PLEASE STOP SPAMMING THE CHANNEL

Answer 5

alright. this is a pretty straight forward question. the first thing to do is to understand what the question is asking.

x-intercept: where the graph crosses the x-axis
y-intercept: where the graph crosses the y-axis

knowing that, you have to realize that when you cross the x axis, you will come up with an ordered pair in the form (x,0), that is, y always equals 0 when you cross the x-axis (think about it, it makes sense). use this rationale to find out what a y-intercept is.

then you have to graph the equation. if you do not know how to use slope-intercept, when all else fails, plug in some numbers for x and see what ordered pairs you come up with. connect the dots, and you're done.

Answer 6

y = mx + b is the slope intercept form of an equation where m is the slope (the change in y / the change in x) and b is the y-intercept or the place the graph of the line crosses the y axis, the point where x - 0 or (0,b)

y = mx + b
Your equation:
y = x + 2
m = 1
b = 2

The y-intercept is at the point (0,2) ANSWER

CHECK by substituting this point into the equation
y = x + 2
2 = 0 + 2
2 = 2 It checks out
-----------------------------------
To find the x-intercept Set y = 0 and solve
y = x + 2
0 = x + 2
-2 = x
The x-intercept is at teh point (-2,0) ANSWER

CHECK by substituting this point into the equation
y = x + 2
0 = -2 + 2
0 = 0 It checks out

Answer 7

if x-intercept, it means the y is equal zero. So:
~ x- intercept y=0
so if the equation is y=x+2
and y=0
so x+2=0
then you find the x
x= -2

if y intercept, it means the x is equal zero. So:
~ y- intercept x=0
so if the equation is y=x+2
and x=0
so y=0+2
y=2

so x,y= -2,2

Answer 8

I can't sketch the graph
but the
x is the slope
which is 1 in this case up one over one..
the y is the y-intercept which is 2.

you start your graph on the positive 2

which is the one going up..and the you go up one over one up one over one...

Answer 9

the x intercept is when the x value is zero, so you find the y value by putting x equals zero and solving the equation.. the same thing otherwise for the y intercept

Answer 10

the x intercept is when the x value is zero, so you find the y value by putting x equals zero and solving the equation.. the same thing otherwise for the y intercept

Answer 11

x intercept = -2
y intercept = 2

easy just draw a graph and you will see
y=x+2

when
x =0, y =2 (y-intercept)
x=1, y=3
x=2, y=4
x=-1, y=1
x=-2 , y =0 (x-intercept)