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Unformatted text preview: 4,3) and ( 4, -2 ) . [Solution]
Okay, for each of these all that we’ll need to do is use the slope formula to find the slope and then
plot the two points and connect them with a line to get the graph.
(a) The line that contains the two points ( -2, -3) and ( 3,1) .
Do not worry which point gets the subscript of 1 and which gets the subscript of 2. Either way
© 2007 Paul Dawkins 160 http://tutorial.math.lamar.edu/terms.aspx College Algebra will get the same answer. Typically, we’ll just take them in the order listed. So, here is the slope
for this part. m= 1 - ( -3 ) 1 + 3 4
3 - ( -2 ) 3 + 2 5 Be careful with minus signs in these computations. It is easy to lose track of them. Also, when
the slope is a fraction, as it is here, leave it as a fraction. Do not convert to a decimal unless you
absolutely have to.
Here is a sketch of the line. Notice that this line increases as we move from left to right.
(b) The line that contains the two points ( -1,5 ) and ( 0, -2 ) .
Here is the slope for this part. m= [Ret...
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- Spring '12