Hi Yo Silver,SILVER said:I just can't uderstand how to graph algebra equations
such as: plot y=xx
I don't know where to start or how to do it please help me
SILVER said:y=x squared
x | y=x^2
--- | -------
0 | 0
1 | 1
2 | 4
3 | 9
-1 | 1
-2 | 4
-3 | 9
masters said:SILVER said:y=x squared
Create a table with two columns, one for x values and one for y values.
Select some arbitrary values for x in your table and substitute them into \(\displaystyle y=x^2\) to find the y value.
For Instance:
Code:x | y=x^2 --- | ------- 0 | 0 1 | 1 2 | 4 3 | 9 -1 | 1 -2 | 4 -3 | 9
Plot these coordinates on the coordinate axes and it should produce a smooth U-shaped curve.
Equation: y=x^2 + 3 *****NOTE: the ^ means to the power and ^2 would mean to the second power.*****
x | y
__________
0 | 3 <------------- y= 0x0 +3 y=0+3=3
1 | 4 <------------- y= 1x1 +3 y=1+3=4
2 | 7 <------------- y= 2x2 +3 y=4+3=7
3 | 12 <------------ y=3x3 +3 y=9+3=12
4 | 19 <------------ y=4x4 +3 y=16+3=19