Question

Which inequality matches the graph?

a. y > 0

b. x > 0

c. x ≥ 0

d. y ≥ 0

Answer 1

Answer: d. y
`\geq` 0

Something that can distinguish whether or not a horizontal line is x or y is an acronym called "HOY" and "VUX." This helps determine if a horizontal line was x = or y = and their slope. So if it's vertical, we know it is an equation of X. If it's horizontal, we know it's an equation of Y.

Line: Horizontal

Slope: 0(zero)

Equation: Y

Line: Vertical

Slope: Undefined

Equation: X