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What is the slope of the line represented by [tex]\( y = x - 9 \)[/tex]?

A. [tex]\( y \)[/tex]
B. 0
C. 1
D. 9


Sagot :

To determine the slope of the line represented by the equation [tex]\( y = x - 9 \)[/tex], we start by examining the general form of a linear equation. The standard form of a line in slope-intercept form is:

[tex]\[ y = mx + b \][/tex]

where [tex]\( m \)[/tex] represents the slope of the line, and [tex]\( b \)[/tex] is the y-intercept.

In the given equation:

[tex]\[ y = x - 9 \][/tex]

we can see that it matches the form [tex]\( y = mx + b \)[/tex]. Here, [tex]\( x \)[/tex] is the variable term, and it has a coefficient, while [tex]\(-9\)[/tex] represents the y-intercept.

To find the slope, we identify the coefficient of [tex]\( x \)[/tex] in the equation. The equation can be rewritten as:

[tex]\[ y = 1x - 9 \][/tex]

From this, we observe that the coefficient of [tex]\( x \)[/tex] (which is [tex]\( m \)[/tex]) is [tex]\( 1 \)[/tex]. Therefore, the slope of the line is:

[tex]\[ \boxed{1} \][/tex]
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