(0,-4)(5,1)
slope = (1 - (-4) / (5 - 0)
slope = 5/5 = 1
y = mx + b
(5,1)...x = 5 and y = 1
slope(m) = 1
now we sub
1 = 1(5) + b
1 = 5 + b
1 - 5 = b
-4 = b
y = x - 4
-x + y = -4
x - y = 4 <===standard form
Answer:
110
Step-by-step explanation:
The markup for the sofa would be $38.80. 40% of 97 is 38.8. so you would add 38.8 to 97 to get the final price. 97 + 38.8=135.8
hope that helped!