Question

Which equation in slope intercept form (i.e. y = mx + b) does the graph below represent?

A coordinate grid is shown. The x-axis values are from negative 5 to positive 5 in increments of 1 for each grid line, and the y-axis values are from negative 10 to positive 10 in increments of 2 for each grid line. A line is shown passing through the ordered pairs negative 4, 8 and 0, 0 and 4, negative 8.
y = −2x + 0 which is the same as y = -2x
y = fraction negative 1 over 2x + 0 which is the same as y = fraction negative 1 over 2 x
y = 2x + 0 which is the same as y = 2x
y = fraction 1 over 2x + 0 which is the same as y = fraction 1 over 2 x

Answer 1

y = -x

Explanation:

The graph goes through (0,0) which means there will be no y intercept. All we need to do is find the slope of the line.

Using
`(rise)/(run)`, our slope is simply -1, so our equation in slope intercept form will be
`y=-x`