# Write and graphs equations of lines

Determine the negative reciprocal of the slope. In other words, it is the input value when the output value is zero.

We already know that the slope is 3. A linear equation can be expressed in the form. Distances in the universe can be measured in all directions.

Their intersection forms a right or degree angle. Coincident lines are the same line.

It must pass through the point 0, 3 and slant upward from left to right. Analysis of the Solution A graph of the function is shown below.

## How to write an equation in slope intercept form from a graph

We can use two points to find the slope, or we can compare it with the other functions listed. A horizontal line indicates a constant output, or y-value. A linear equation can be expressed in the form. Analysis of the Solution. If the slopes are the same and the y-intercepts are different, the lines are parallel. It must pass through the point 0, —3 and slant upward from left to right. For two perpendicular linear functions, the product of their slopes is —1. We can see that the input value for every point on the line is 2, but the output value varies. The change in outputs between any two points is 0. The bar labeled b changes the y-intercept. A positive y-intercept means the line crosses the y-axis above the origin, while a negative y-intercept means that the line crosses below the origin.

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