How do you find the yCalculate the slope from 2 points. For Example, Two points are (3, 5) and (6, 11). Substitute the slope(m) in the slope-intercept form of the equation.. Substitute either point into the equation. You can use either (3,5) or(6,11).. Solve for b, which is the y-intercept of the line.. Substitute b, into the equation.. How do you find yThe slope intercept formula y = mx + b is used when you know the slope of the line to be examined and the point given is also the y intercept (0, b). In the formula, b represents the y value of the y intercept point.
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