Question

The instructor had saved $3,500 and rents an apartment for $275 monthly. He believes the point (6, 1850) would be on the equation of the line. Is he correct? Explain how to check if a point is on a line

Answer 1

Sample Answer: Write the equation using slope and y-intercept in slope-intercept form, y = –275x + 3500. Then, substitute the x and y values of the point into the equation, 1850 = –275(6) + 3500. Simplify to see if both sides are equivalent. Yes, the instructor is correct because both sides are equivalent.

Answer 2

Y = -275x + 3500
(6,1850)....x = 6 and y = 1850
now we sub
1850 = -275(6) + 3500
1850 = - 1650 + 3500
1850 = 1850 (correct)

so yes, (6,1850) is a point on the line