Answer:
The domain ⇒ x ∈ real number
The range ⇒ y ≥ -3
The y-intercept ⇒ (0 , -1)
Step-by-step explanation:
∵ y = 2Ix - 1I - 3
∴ y = 2(x - 1) - 3
∴ y = 2x - 2 - 3 = 2x - 5 ⇒ positive slope
∴ y = 2(-x + 1) - 3
∴ y = -2x + 2 - 3 = -2x - 1 ⇒ negative slope
∴ 2x - 5 = -2x - 1 ⇒ 4x = 4 ⇒ x = 1
∴ Y = 2(1) - 5 = -3
∴ The two lines intersect each other at (1 , -3)
∴ The domain is x ∈ real number
∴ The range is y ≥ -3
∴ The y-intercept = -1 ⇒ (0 , -1)
The final price is $ 40
<em><u>Solution:</u></em>
A store in Minnesota advertises that on a holiday, everything is 20% off
Discount = 20 %
A person buys shoes for $40 and socks for $10
<em><u>Therefore, Total price before discount is given as:</u></em>
Total price = 40 + 10 = 50
Therefore,
Total price before discount = $ 50
Discount = 20 %
Therefore, discount price is 20 % of 50
Thus the discount price is $ 10
<em><u>Final price is given as:</u></em>
Final price = Total price before discount - discount price
Final price = 50 - 10 = 40
Thus the final price is $ 40