Q:

Find an equation for the line that passes through the points(-4,-3)and(6,1).

Accepted Solution

A:
Answer:[tex]2x - 5y = 7\:\:or\:\:y = \frac{2}{5}x - 1\frac{2}{5}[/tex]Step-by-step explanation:First, find the rate of change [slope]:[tex]\frac{-y_1 + y_2}{-x_1 + x_2} = m[/tex][tex]\frac{3 + 1}{4 + 6} = \frac{4}{10} = \frac{2}{5}[/tex]Then plug these coordinates into the Slope-Intercept Formula instead of the Point-Slope Formula because you get it done much swiftly. It does not matter which ordered pair you choose:1 = β…–[6] + b 2β…–βˆ’1β…– = by = β…–x - 1β…– >> Line in Slope-Intercept Form If you need it written in Standard Form:y = β…–x - 1β…–-β…–x -β…–x_________βˆ’β…–x + y = βˆ’1β…– [We do not want fractions in our standard equation, so multiply by the denominator to get rid of it.]βˆ’5[βˆ’β…–x + y = βˆ’1β…–]2x - 5y = 7 >> Line in Standard Form_______________________________________________βˆ’3 = β…–[βˆ’4] + b βˆ’1β…—βˆ’1β…– = by = β…–x - 1β…– >> Line in Slope-Intercept Form If you need it written in Standard Form:y = β…–x - 1β…–-β…–x -β…–x_________βˆ’β…–x + y = βˆ’1β…– [We do not want fractions in our standard equation, so multiply by the denominator to get rid of it.]βˆ’5[βˆ’β…–x + y = βˆ’1β…–]2x - 5y = 7 >> Line in Standard Form** You see? I told you it did not matter which ordered pair you choose because you will ALWAYS get the exact same result.I am joyous to assist you anytime.