Slope-Intercept Form
Slope-Intercept Form Slope-intercept form is written as follows: y = mx + b 'm' is the slope 'b' is the y-intercept Problem #1 Write an equation in slope-intercept form for a line whose slope is 5 and whose y-intercept is 7. Step 1 Remember that slope-intercept form is written: y = mx + b Step 2 Plug-in the given slope (5) and y-intercept (7): Answer: y = 5x + 7 Problem #2 Identify the slope and y-intercept of the following equation: y = -x + 3 Step 1 Determine the slope: Although there is no number in the 'm' portion of the equation, since it is '-x' the slope is -1 Step 2 Determine the y-intercept: In this equation the y-intercept is 3 Answer: Slope = -1; y-intercept = 3 You may find the following video helpful: https://www.youtube.com/watch?v=u3spOO-m_Gg