What is the x-coordinate of the intercept after translating the …

Mathematics Questions

What is the x-coordinate of the intercept after translating the graph of 9x – 10y = 19 down 4 units in the xy-plane?

Short Answer

To find the x-intercept of the original line equation (9x – 10y = 19), set (y) to 0, resulting in an x-intercept of (19/9). After translating the line down by 4 units, the new equation becomes (9x – 10y = 59), giving a new x-intercept of (59/9).

Step-by-Step Solution

Step 1: Understand the Original Equation

The original equation of the line is given as 9x – 10y = 19. To find the x-intercept, set y to 0. Rearranging this equation leads to the expression x = (19 + 10y) / 9. Plugging y = 0 into this equation results in the original x-intercept of 19/9.

Step 2: Translate the Line Downward

To translate the line down by 4 units, modify the equation by decreasing the y values. This can be achieved by adjusting the constant term in the equation: 9x – 10y = 19 becomes 9x – 10y = 19 + (10 ‚àöo 4). Thus, the new equation for the translated line is 9x – 10y = 59.

Step 3: Determine the New X-Intercept

To find the x-intercept of the new equation 9x – 10y = 59, again set y to 0. This leads to the equation transforming to x = (59 + 10y) / 9. Setting y = 0 yields a new x-intercept of 59/9.

Related Concepts

Original Equation

The equation representing a straight line in the form ax + by = c, where a, b, and c are constants.

X-Intercept

The point where a line crosses the x-axis, calculated by setting y to zero in the equation of the line.

Translation Of A Line

The process of shifting a line up or down (or left or right) in a coordinate plane without changing its slope, typically done by adjusting the constant term in the line’s equation.

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