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Sagot :
Answer:
The proper format of x = -1 is a vertical line.
Step - By - Step Explanation:
• The definition of a linear equation is an algebraic expression in which each term has an exponent of one and the graphing of the equation results in a straight line.
• Linear equations are oftentimes written in the form:
- y = mx + b
• Slope: Or the gradient of a line is a number that describes both the direction and the steepness of the line.
- The slope is calculated by finding the ratio of the "vertical change" to the "horizontal change" between any two distinct points on a line. It is written in the form:
- m = rise (change in y) ÷ run (change in x) = (y2 - y1) ÷ (x2 - x1)
- m = slope
- (x1 , y1) = coordinates of the 1st point
- (x2 , y2) = coordinates of the 2nd point
• There are three major forms of linear equations:
- Point - Slope Form
- Standard Form
- Slope - Intercept Form
• Point - Slope Form: It emphasizes the slope of the line and a point on the line (that is not the y - intercept). It is written in the form:
- y - y₁ = m (x - x₁)
- y = y - coordinate of the 2nd point
- y₁ = y - coordinate of the 1st point
- m = slope
- x = x - coordinate of the 2nd point
- x₁ = x - coordinate of the 1st point
• Standard Form: Is just another way of writing the equation of the line. It is written in the form:
- Ax + By = C
- A = integer
- x = x - intercept
- B = integer
- y = y - Intercept
- C = integer
• Slope - Intercept Form: Is a way of writing the equation of a line so that the slope of the line and the y - intercept are easily identifiable. It is written in the form:
- y = mx + b
- y = y - coordinate
- m = slope
- x = x - coordinate
- b = y - intercept
• The function x = -1 means that for all values of y, the value of x = -1. This is represented by a vertical line at x = -1.
• The slope of the line x = -1 is unknown. The slope doesn't exist because there is no y - value, and the x - value would be 0 and you can't divide by 0.
• Vertical Lines help determine if a relation is a function in math. The equation of a vertical line always takes the form x = k, where k is any number and k is also the x - intercept.
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Answer:
The answer would be a and d
Step-by-step explanation:
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