ANATOMY

Detailed explanation-1: -Step 1: Substitute the given into the formula. Since the y intercept is (0, 4), b = 4 and the slope, m, is given as 2/3.

Detailed explanation-2: -When a linear equation is written in slope-intercept form (y=mx+b), the y-intercept is represented by the constant variable b. For example, in the equation y=6x+8, the variable b corresponds with 8. This is the y-intercept.

Detailed explanation-3: -The line y=4 is really y=(0)x + 4. The slope is 0, so it is a horizontal line (it doesn’t rise or fall as x increases). The line crosses the y axis (the y-intercept, where x=0) at y=4. The point (0, 4).