Slope measures the steepness and direction of a line in the coordinate plane. Slope is calculated as the ratio of vertical change to horizontal change. Slope formula: m = tan θ = (y2 - y1)/(x2 - x1)
A straight line is a two-dimensional entity extending to infinity. The equation of a straight line is y = mx + c, where m is slope and c is y-intercept. The x-axis has a slope of 0, while the slope of parallel lines to the y-axis is undefined
Linear function represents a straight line on coordinate plane. Written in form f(x) = mx + b, where m is slope and b is y-intercept. Parent function is f(x) = x, passing through origin
Linear functions form straight lines and describe variables that change at constant rates. Slope is calculated using the formula: slope = (y2-y1)/(x2-x1). Slope can be positive (increasing) or negative (decreasing). Zero slope indicates constant value, forming horizontal lines
Linear functions have the form f(x) = ax + b, where a and b are constants. Positive a values indicate increasing functions, negative a values indicate decreasing functions. Zero a value represents horizontal lines
y=mx+c is the general equation of any straight line. The gradient (m) indicates the line's steepness. The y-intercept (c) is the point where the line crosses the y-axis. The variables x and y relate to coordinates on the line