The equation of a linear function in point-slope form is y minus y sub 1 is equal to m times open paren x minus x sub 1 close paren Harold correctly wrote the equation y is equal to 3 times open paren x minus 7 close paren using a point and the slope. Which point did Harold use?
Answer
A
0 comma 7
B
7 comma 0
C
7 comma 3
D
3 comma 7
Explanation
Point-slope form is y − y₁ = m(x − x₁). Harold’s equation, y = 3(x − 7), can be written as y − 0 = 3(x − 7). Thus y₁ = 0 and x₁ = 7, so the point is (7, 0), choice A.
AI-written and checked against the verified answer.