The graph of a linear function is shown on the grid. plotted points are Y 11,12 X -4, -3

Which equation is best represented by this graph?

1 answer

To determine the equation of the linear function represented by the given points \( Y: 11, 12 \) and \( X: -4, -3 \), we need to first find the slope of the line based on these points. The two points can be represented as the coordinates \( (-4, 11) \) and \( (-3, 12) \).

  1. Calculate the slope (m) between the two points: \[ m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{12 - 11}{-3 - (-4)} = \frac{1}{1} = 1 \]

  2. Use the point-slope form of the equation of a line: The point-slope form is given as: \[ y - y_1 = m(x - x_1) \] We can use one of the points; let's choose \( (-4, 11) \): \[ y - 11 = 1(x + 4) \]

  3. Simplify the equation: \[ y - 11 = x + 4 \] \[ y = x + 15 \]

Thus, the equation of the linear function best represented by the graph is: \[ y = x + 15 \]

This is the equation of the line based on the two given points.