Question

Help i need to know how to put this equation together by looking at the graph

Answer 1

To calculate the slope of a graphic you have to compare two points.

I'll use the ones marked with a dot.

One is the y- intercept(b) of the line P₁ (0,2)

The other one is P₂ (-1,-1)

The formula to use is

`m=(y_1-y_2)/(x_(1-x2))`

m= slope

y₁ and x₁ represent the coordinates of the first point

y₂ and x₂ represent the coordinates of the second point

`m=(2-(-1))/(0-(-1))=(2+1)/(1)=(3)/(1)=3`

The slope of the linear function is m=3

y= b + mx

b= y-intercept (value of y when x=0)

y= 2 + 3x