SOLUTION: A line passes through the points P(4,0) and Q(6,-4). a) Calculate the slope of the line. b) Write the equation of the line in slope-intercept form.

Algebra ->  Graphs -> SOLUTION: A line passes through the points P(4,0) and Q(6,-4). a) Calculate the slope of the line. b) Write the equation of the line in slope-intercept form.       Log On


   

Question 207610: A line passes through the points P(4,0) and Q(6,-4).
a) Calculate the slope of the line.
b) Write the equation of the line in slope-intercept form.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
Y=mX+b
m=slope=(y2-y1)/(x2-x1)=(-4-0)/6-4)=-4/2=-2 is the slope.
a)=-2
0=-2*4+b
0=-8+b
b=8 is the y intercept.
b) Y=-2X+8
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+-2x+%2B8%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -2x +8).