Select the equation of a line that is parallel to the function graphed below: It is a double arrow, the top of the arrow reaching into the top right part of the graph, the top middle part of the arrow just BARELY under the 5. The end of the middle of the double arrow is halfway in the middle of -5 and -10. It doesn't show where the very top of the arrows are, but we can see the top middle and the bottom middle.

1 answer

To select the equation of a line that is parallel to the function you described, we need to determine the slope of the given line (or the implied slope based on its direction).

  1. Understanding Parallel Lines: Lines that are parallel have the same slope. Therefore, we need to know the slope of the line graphed.

  2. Interpreting the Graph Description: It seems that the line you described is sloped upwards, reaching towards the top right. If the top middle of the arrow is just under 5 and the bottom middle is halfway between -5 and -10 (which is -7.5), we can understand the vertical change (rise) and the horizontal change (run) to find the slope.

  3. Calculating the Slope: If we denote the top middle point as approximately (x1, 5) and the bottom middle point as approximately (x2, -7.5), we can calculate the slope as follows, depending on their x-coordinates (which are not specified). The slope \(m\) can be represented generally as: \[ m = \frac{\text{rise}}{\text{run}} = \frac{5 - (-7.5)}{x_1 - x_2} \] \[ = \frac{5 + 7.5}{x_1 - x_2} = \frac{12.5}{x_1 - x_2} \] Since we don't have specific values for \(x_1\) and \(x_2\), we can't compute an exact numerical slope. However, if the line's rise is significantly more than its run, it likely has a positive slope with a value greater than 1.

  4. Choosing a Parallel Line Equation:

Assuming the slope is found to be a specific positive number \(m\), a parallel line can be expressed in the point-slope form: \[ y - y_0 = m(x - x_0) \] where \((x_0, y_0)\) is a point on the new line.

For example, if the slope \(m\) was found to be, say, 2, and you wanted to create an equation for a parallel line that passes through the point (0, 0) (the origin), you would write: \[ y - 0 = 2(x - 0) \] which simplifies to: \[ y = 2x \]

In summary, to choose a correct equation, we need to find the slope of the line from the graph (which seems to be upward) and then use that slope to create a new line equation in point-slope or slope-intercept form. Without additional specific numeric values provided, I recommend calculating the slope based on the graph's visual cues and creating an equation following that slope.