Answer:
y = -2x + 13
Explanation:
To find the equation, we need to find the y intercept. To find the y intercept, plug in the points you have into the slope-intercept equation.
Slope intercept equation: y = m(x) + b
y (a y-coordinate) = -1
x (a corresponding x-coordinate) = 7
m (the slope) = -2
b (the y-intercept) = ?
-1 = -2(7) + b
Now, solve for b.
-1 = -14 + b
13 = b
Therefore, the y intercept is 13.
Now, we can write the equation in slope-intercept form.
y = -2x + 13