SOLUTION: How do I solve this equation? graphing this equation y = -3/4x-3. Been working on it but can't figure it out,I think the y intercept is -3

Algebra ->  Graphs -> SOLUTION: How do I solve this equation? graphing this equation y = -3/4x-3. Been working on it but can't figure it out,I think the y intercept is -3      Log On


   

Question 375069: How do I solve this equation? graphing this equation y = -3/4x-3. Been working on it but can't figure it out,I think the y intercept is -3
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Looking at y=-%283%2F4%29x-3 we can see that the equation is in slope-intercept form y=mx%2Bb where the slope is m=-3%2F4 and the y-intercept is b=-3


Since b=-3 this tells us that the y-intercept is .Remember the y-intercept is the point where the graph intersects with the y-axis

So we have one point




Now since the slope is comprised of the "rise" over the "run" this means
slope=rise%2Frun

Also, because the slope is -3%2F4, this means:

rise%2Frun=-3%2F4


which shows us that the rise is -3 and the run is 4. This means that to go from point to point, we can go down 3 and over 4



So starting at , go down 3 units


and to the right 4 units to get to the next point



Now draw a line through these points to graph y=-%283%2F4%29x-3

So this is the graph of y=-%283%2F4%29x-3 through the points and


If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website

Jim