## 11 terms · yeeee boyyyy

### how to graph a slope intercept

y=2x+10 <ex first place a 0 in the x spot and solve for y. then do the same by putting a 0 in the y spot and solve for x. that give you a 0,y and x,0 formula. therefor you can graph it and check it by graphing y=2x+10

### What is the coefficient of corelation

You are trying to find the linear relationship between the two variables formula: r= n(Exy) - (Ex.....

x/y/xy/x2/y2 get the sums of these columns to put into the formula

### What does SSE stand for and what is it used for

The Sum of the Squares of Error.

Finding the vertical error between the points and the given line

x/y/Predicted Y with the ^ over it (y=mx+b)/y-(^Y)/y-(^y)(squared)

this ^ is the way the chart must look... to get the predicted you must plug in the given X to get the predicted y

to get the SSE you must sum up the (Y-(^Y)(squared))

### Regression Line

THe regression line is the formulas where there is

n(Exy)..

and b=Ey-m(Ex)

Least squares line, best fit line

### slope for price and quantity

m=q2-q1/p2-p1

intercept=b=q1-M(P1)

or just get y=mx+b and chose any given xy coordinate and plug it in to the x and the y and also plug in the slope

### What does it mean when 2 equations in 2 unknowns are linear

Geometrically they are the same line, so they have infinitely many solutions.

### What does it mean when 2 equations in 2 unknowns are inconsistent

They are parallel so they are two different lines that never meet

### explain the geometric meaning of a 2 x 2 system having exactly one solution?

The equations are 2 lines that intersect at one point looks like X