Question

Determine whether each point lies on the graph of the equation.

a) Equation: ? = ?2 − 4 Points: ?) (−3, 5), ??) (−2, −4), ???) (−1, − 3)

b) Equation: ? = √? + 5 Points: ?) (4, 3), ??) (−2, 1), ???) (−1, 2)

Answer 1

(b) for the equation y= √x+5

(i) (4,3)

When x= 4

Y= √4+5 = √9 = 3

Thus point (4,3) lies on the graph.

(ii) (-2,1)

When x= -2

y = √-2+5 = √3

Thus point (-2,1) does not lies on the graph

(iii) (-1,2)

When x= -1

y = √-1+5 =√4 = 2

Thus point (1,-2) lies on the graph