Question

Chin was shown the graph of a line that contained point (1, 7). He wrote f(x) = 4x + 3 to correctly represent the line. Which of these equations could represent the same line?

y – 7 = 3(x – 1)
y – 1 = 3(x – 7)
y – 7 = 4(x – 1)
y – 1 = 4(x – 7)

Answer 1

C - y-7=4(x-1)

Explanation:

Answer 2

Hence option A and C are correct

Explanation:

By putting value of 1.7 in each of the given equations of line as options should satisfy the equation

Option A

7– 7 = 3(1– 1)

0 = 0

Option B

y – 1 = 3(x – 7)

7-1 not equal to 3 (1-7)

Option C

y – 7 = 4(x – 1)

7 - 7 = 4 (1-1)

0 = 0

Option D

y – 1 = 4(x – 7)

7-1 is not equal to 4 (1-7)