Question

Select the correct answer. Find the slope and the y-intercept of the equation y − 3(x − 1) = 0. A. slope = -3 and y-intercept = -3 B. slope = 3 and y-intercept = 3 C. slope = -3 and y-intercept = 3 D. slope = 3 and y-intercept = -3

Answer 1

D. slope = 3 and y-intercept = -3

Explanation:

The equation can be rearranged by adding the opposite of the term with parentheses:

y = 3(x -1)

Expanding this to slope-intercept form gives ...

y = 3x -3 . . . . . . . . slope = 3, y-intercept = -3

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Slope-intercept form is ...

y = mx +b . . . . . . . . slope = m, y-intercept = b