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

Note that f(x) = 4x + 3 can be written as:

y = 4x + 3

This is the slope-intercept form

4 is the slope and 3 is the intercept

Since the line is passing through (1, 7), we can re-write it as:

y – 7 = 4(x – 1)

This is called the point-slope form

So, the correct answer is the third one

Answer 2

Answer:

Step-by-step explanation:

Note that f(x) = 4x + 3 can be written as:

y = 4x + 3

This is the slope-intercept form

4 is the slope and 3 is the intercept

Since the line is passing through (1, 7), we can re-write it as:

y – 7 = 4(x – 1)

This is called the point-slope form

So, the correct answer is the third one