The proper format of x = -1 is a vertical line.
• 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:
• Slope: Or the gradient of a line is a number that describes both the direction and the steepness of the line.
• There are three major forms of linear equations:
• 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:
• Standard Form: Is just another way of writing the equation of the line. It is written in the form:
• 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:
• 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:
