Mathematics for IGCSE & O level - Coordinate Geometry (Section 1 - No. 50)
A line has a y-intercept of 4 and a gradient of -2. What is the equation of the line?
y = 4x - 2
y = -2x + 4
y = -2x - 4
y = 2x + 4
ব্যাখ্যা
Using the slope-intercept form: y = mx + c. Where m = -2 (gradient) and c = 4 (y-intercept)