im doing my math hm and idont kno how to do that
2007-11-29 12:11:03 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Example
y = 2x + 5
Cuts y axis when x = 0
Cuts y axis at y = 5
This is point (0 , 5)
Hope this helps.
2007-12-06 03:42:03 · answer #1 · answered by Como 7 · 0⤊ 0⤋
you look for the condition when x = 0, the y value at that point is the y-intercept
in a linear equation (an equation for a line) you have y = mx+b
where m = slope and b = y-intercept
2007-11-29 20:14:15 · answer #2 · answered by Jim L 3 · 1⤊ 0⤋
the y-intercept is where the line intercepts with the y axis so if the line intersects with 3 on the y axis then the y-intercept is 3
2007-11-29 20:18:16 · answer #3 · answered by Cait 2 · 0⤊ 0⤋
To determine the equation of a line the following formulas are used.
m = (y2 - y1) / (x2 - x1) Slope formula
y = mx + b Slope, y-intercept formula
y - y1 = m(x - x1) Point Slope formula
Ax + By = C Standard Form
2007-11-29 20:14:24 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Find the slope.
Slope is m
Plug in a point on the graph.
y (coordinate)=mx(coordinate)+b
Solve for b for the y-intercept
2007-11-29 20:24:09 · answer #5 · answered by garpit c 5 · 0⤊ 0⤋
by definition, the y-intercept is the y-value when x is set to zero. get your equation, set x=0 and solve for y and there you have it.
2007-11-29 20:15:24 · answer #6 · answered by Mike 2 · 0⤊ 0⤋
An x-y graph looks a bit like this:
.............^y
.............|
----------------------->x
.............|
.............|
The y intercept is the point where the function crosses the y axis. This is the same point where x = 0.
So take your function, plug x in, and see what y value you get.
2007-11-29 20:14:33 · answer #7 · answered by rebkos 3 · 0⤊ 0⤋
you make the x=0 and solve for y.
2007-11-29 20:14:27 · answer #8 · answered by Alejandro B 2 · 0⤊ 0⤋
y=mx+b
2007-11-29 20:13:52 · answer #9 · answered by Britni 2 · 0⤊ 1⤋