Answer:
Step-by-step explanation:
1. You just plot the points
2. To plot the line you have to find the slope and y-intercept
Slope = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex] = [tex]\frac{30-15}{4-2}[/tex] = [tex]\frac{15}{2}[/tex]
Slope = [tex]\frac{15}{2}[/tex]
Y-intercept = [tex]y-y_{1}=m(x-x_{1} )[/tex]
Y-intercept: y - 15 = [tex]\frac{-15}{2}[/tex](x - 2)
y - 15 = [tex]\frac{-15}{2}x[/tex] + 15
Add 15 to both sides
y = [tex]\frac{-15}{2}[/tex]x + 30 this is the equation of the line.
So you start with the starting point and then the slope!
