Question

An illustration of a coordinate plane with four quadrants shows the x-axis ranging from negative 9 to 9 and the y-axis ranging from negative 11 to 11 in increments of 1. A solid upward line with arrows at both ends is plotted on the graph. The line passes through the plotted points left parenthesis 0 comma negative 4 right parenthesis and left parenthesis 1 comma negative 1 right parenthesis.
Using the graph, derive the equation of the line in slope-intercept form.

(1 point)

3x−y=4


y=3x+4


y=−3x−4


y=3x−4

Answer 1

Slope m = (-1 - (-4)) / (1 - 0) = 3. The y-intercept is -4 (point (0,-4)). So the equation is y = 3x - 4.

Correct choice: y = 3x − 4.