Equations in graphing?

Question

Given the graph of an equations, where would you look on the graph to find the solutions to the equation that goes with the graph?

 

This word problem was on my test and I got it wrong, I know that one answer is the x- intercept. I am a little stuck.

Answer 1

Hi Addie;

In class, did you cover

y=mx+b

?

 

m=slope=(y₂-y₁)/(x₂-x₁)

b=y-intercept.  This is the value of y when x=0.  It is the position in which the line crosses the y-axis.

 

The question was...

Given the graph of an equations, where would you look on the graph to find the solutions to the equation that goes with the graph?

 

The answer I would suggest is...

I would look at the position on the y-axis when x=0.  This is the y-intercept, also known as b in the equation known as y=mx+b.  The m in such equation is the slope.  This is the difference between any two coordinates.  It is the value of each y-coordinate, subtracted from each other.  Such subtracted result is divided by the corresponding two x-coordinates, also subtracted from each other.