Answer:
y = 3/2x + 2.5
Explanation:
You can use the slope equation: [tex]\frac{y_1-y_2}{x_1-x_2} = \frac{rise}{run}[/tex]
So: [tex]\frac{1-4}{-1-1} = \frac{3}{2}[/tex]
Then just plug in the one of the original points to find the y-intercept:
[tex]4 = \frac{3}{2} (1)+b\\4=\frac{3}{2} +b\\4=1.5+b\\(-1.5)+4=1.5+b+(-1.5)\\2.5=b[/tex]
And finally turns into: [tex]y=\frac{3}{2} +2.5[/tex]
