## Algebra 1 - Write the Equation of the Line Given two points.

Say it has no slope. Horizontal lines have a zero slope. Zero is a number. In the equation, you are dividing zero by a number and the result is zero. If a quiz asks for the slope of a horizontal line, say zero. Parallel lines have equal slopes. If you find the slope of one line, you don't have to use the formula for the other line. They will be.

Title: 4-5B Write an Equation in Standard Form and in Slope-Intercept Form 1 4-5B Write an Equation in Standard Form and in Slope-Intercept Form Algebra 1 Glencoe McGraw-Hill Linda Stamper 2 Remember slope-intercept form and point-slope form 3 In this lesson you will write the equation of a line given in point-slope form into standard form.

The slope intercept form of a linear equation is written as, where m is the slope and b is the value of y at the y-intercept. Because we only need to know the slope and the y-intercept to write this formula, it is fairly easy to derive the equation of a line from a graph and to draw the graph of a line from an equation.

Write the equation for a linear function from the graph of a line.. that between any two points, the change in the input values is zero. In the slope formula, the denominator will be zero, so the slope of a vertical line is undefined.. Write the equation of the line graphed in Figure 16. Figure 16.

Now letâ€™s look at the y-intercept.Looking at the graph, you can see that this graph never crosses the y-axis, therefore there is no y-intercept either.Another way to look at this is the x value has to be 0 when looking for the y-intercept and in this problem x is always 5. So, for all our efforts on this problem, we find that the slope is undefined and the y-intercept does not exist.

Tell whether the slope is positive, negative, zero, or undefined Estimate the slope of the line on a coordinate plane Find the slope and y-intercept of the equation Find the slope of the line passing through the given points Writing the Equation of a Line Using the Point-Slope Form.

Where A, B and C are real numbers and where A and B are not both zero. Since the slope of a vertical line is undefined you can't write the equation of a vertical line using neither the slope-intersect form or the point-slope form. But you can express it using the standard form.