Question

Here’s a graph of a linear function . Write the function. Express it in slope - intercept form

Answer 1

y = -3x + 4

Explanation:

We can readily see that the straight line graph crosses the y-axis at (0, 4). This is the "y-intercept."

If we move along the graph from this (0, 4) to (3, -5), x increases by 3 and y decreases by 9. Thus, the slope of this line is m = rise / run = -9/3 = -3.

Thus, the slope-intercept form of the equation of this line is

y = -3x + 4.