Two points give you a line. A third point (often called a check-point) is used to confirm the accuracy of your first two points. If all three line up, you have confirmed you have the correct line.
Answer:
85
Step-by-step explanation:
The 9 th square number is 9² = 81
The 2 nd square number is 2² = 4
sum = 81 + 4 = 85
R would equal -189, there is step by step in the picture
Answer:
It should be 5.99x+4, where x is the number of pizzas ordered.
Answer:
(1,-2)
Step-by-step explanation:
x= 1
y= 2
