The linear equation written in the form largey mx b is in slope-intercept form where. This y-value is therefore also the y-intercept. Alsosince the line is horizontal every point on that line has the exact same y value.
In the previous lesson on functions you learned how to find the slope and write an equation when given a function.
M y 2 y 1 x 2 x 1 1 3 3 3 4 6 2 3. So the x-intercept is - y-interceptslope. The y-intercept b is found by plugging in x 0 into the equation which results in y b and therefore is the y-intercept. For this one they give you a point x1 y1 and a slope m and have you plug it into this formula.