SOLUTION: Graph the function y=4x+5 with the domain x is less than or equal to 0. What is the range of the function above?

Question 934584: Graph the function y=4x+5 with the domain x is less than or equal to 0.
What is the range of the function above?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the graph of y = 4x+5

Now only draw the portion that makes true (so everything to the left of 0 and we include 0 itself).

Notice how I erased the portion to the right of x = 0. There is a closed circle at x = 0.

We can see the range is . In interval notation, the range is $(-\infty,5]$
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