Determine whether the statement is true or false: The graph of a linear equation can have either no x-intercepts or only one x-intercept.

The statement is false. A linear equation in two variables (like y = mx + b) typically produces a straight line when graphed on a coordinate plane.

To understand the x-intercepts of a linear equation, we need to determine where the line crosses the x-axis. The x-intercept occurs when y = 0. To find the x-intercept, we can set y to 0 in the equation of the line:

0 = mx + b

Rearranging this gives:

mx = -b

x = -b/m (assuming m ≠ 0)

From this, we can see that:

  • If the slope (m) is not zero, the line will have exactly one x-intercept.
  • If the slope (m) is zero, the line is horizontal (y = b). In this case, it will not intersect the x-axis at all unless b = 0, in which case, the line would lay along the x-axis, and every point on the x-axis can be considered an intercept.

Thus, the only situations for a linear graph regarding x-intercepts are:

  • One x-intercept (when the line is not horizontal).
  • No x-intercept (when the line is horizontal and not at y = 0).

In conclusion, a linear equation’s graph cannot have

More Related Questions