Let us the formula to calculate the slope of the line passing through the points 25 2 5 and 51 5 1. A disadvantage of this formula is that it cannot express lines where x is constant for example the line x 3 this problem arises because we have defined y as a function of x. Use the point-slope formula to find an equation of the line passing through the point 2 -3 and having slope -4.
Write the answer in slope-intercept form.
The slope-intercept formula of a line is written as y m xb where m is the slope and b is the y-intercept the point on the y-axis where the line crosses it. On this intro to slope lesson you will learn everything there is to know about finding the slope of a line including the types of slope. Assuming youre talking about a linear straight-line equation you would use the standard slopey-intercept form y mx b. Let us the formula to calculate the slope of the line passing through the points 25 2 5 and 51 5 1.