Question

Here's a graph of a linear function. Write the

equation that describes that function.
Express it in slope-intercept form.

Answer 1

Answer: y= 1/2x -5

Explanation:

using slope intercept form you should start with the equation y=mx+b

b=the y intercept

m=the slope

finding the y intercept is easy as all you have to do it look and find where the line crosses the y axis which in this case is -5

this is a positive slope so to find the slope you would look for "rise over run" or how many points it goes up over have many points it goes right. you can choose any point on the graph but I prefer to start at the y intercept. if you look, it goes up one and right two which gives you a slope of 1/2.

now you must take both of those numbers and put them into the equation of y=mx+b

we have found that:

m= 1/2

b= -5

so once you plug those into the equation you get: y= 1/2x -5