To solve the equation 4x - y = 20 for slope-intercept form (y = mx + b), where m is the slope and b is the y-intercept, we need to isolate y on one side of the equation.
Let's rearrange the equation step by step:
1) Start with the given equation: 4x - y = 20.
2) Move the term with x to the right side: -y = -4x + 20.
3) Multiply both sides of the equation by -1 to make the coefficient of y positive: y = 4x - 20.
Now, the equation is in slope-intercept form (y = mx + b), where the slope (m) is 4 and the y-intercept (b) is -20.