Sur it's a function because for each x value corresponds one and only one y value.
Another easy way to determine if y is a function is to apply the vertical test:
If you draw a vertical line and this lines intersects the graph in one point, then y is a function
Answer:
y = 4
Step-by-step explanation:
distribute
10 + 2y = 18
minus 10 from both sides
2y = 8
divide by 2
y = 4
Answer:
complementary
Step-by-step explanation:
because the angles add up to 90°
Answer:
(x - 3)^2 + (y + 2)^2 = 2^2.
