Question

which point has coordinates (1, -1)?

Explanation:

Step1: Recall coordinate system rules

In a coordinate \((x, y)\), \(x\) is horizontal (right positive), \(y\) is vertical (up positive).

Step2: Analyze each point

• Point B: \(x\approx -1\), \(y = -1\) (not \((1, -1)\)).
• Point C: \(x = 1\), \(y = -1\) (matches \((1, -1)\)).
• Point D: \(x = 1\), \(y = 1\) (not \((1, -1)\)).
• Point E: \(x = 2\), \(y = -2\) (not \((1, -1)\)).

Answer:

C. Point C