Answer: y = x -1
reasoning: the slope is 1 because the rise/run = 1/1, which simplifies to 1.
the y intercept is -1 because the line passes through the y axis at -1.
hope this helps!
Distance between Q and R only relies on x-values. So, here we do not need to use the distance formula.
R (6,-4) = (X1, Y1)
Q (-8,-4)= (X2,Y2)
distance= X1-X2
d= (6-(-8)) = (6+8)= 14 units
You can represent the commission he will make one math expression that includes all the information.
(4 domestic cars x $24000 + 2 domestic cars x $9000) x 0.06 + (2 foreign cars x $13500) x 0.04 = $7920
He earned $7920 in commission.