FORM 2 SOUTH : EQUATION OF A STRAIGHT LINEVersion en ligne Test your knowledge on the equation of a straight line with this fun quiz! par Peris Mwangi 1 What is the slope-intercept form of a straight line? a y = mx + b b y = mx - b c y = ax + b d y = mx^2 + b 2 In the equation y = mx + b, what does 'm' represent? a Y-intercept b X-intercept c Distance d Slope of the line 3 What is the standard form of a straight line equation? a x^2 + y^2 = r^2 b Ax + By = C c y = a + bx d y = mx + b 4 What does 'b' represent in the slope-intercept form? a Slope b Y-intercept c Distance d X-intercept 5 If the slope of a line is 0, what type of line is it? a Curved line b Horizontal line c Diagonal line d Vertical line 6 What is the slope of a vertical line? a 1 b 0 c -1 d Undefined 7 How do you find the slope between two points (x1, y1) and (x2, y2)? a m = (y1 + y2) / (x1 + x2) b m = (y2 + y1) / (x2 + x1) c m = (y2 - y1) / (x2 - x1) d m = (x2 - x1) / (y2 - y1) 8 What is the x-intercept in the equation y = 2x + 6? a 3 b 0 c -3 d 6 9 Which of the following represents a line with a negative slope? a y = -2x + 3 b y = 2x + 3 c y = 0.5x - 1 d y = x + 4 10 What is the equation of a line parallel to y = 3x + 2? Choose one or more answers a y = -x + 2 b y = 3x + b c y = -3x + b d y = 3x - b Feedback 1 Slope intercept form gives the graph of a straight line and is represented in the form of y=mx+c. 2 m is always the slope ,steepness or gradient of a line 3 This also means the general equation of a straight line 4 It occurs when the line intercepts with the y axis 5 It shows that there is no change along the y-axis 6 The value is very big! In other words, we say infinity. 7 This is the gradient of a line: change in y over change in x 8 x intercept is obtained when y=0 9 The slope of a line is considered to be a positive slope line if the right side of the line is higher, or, has a greater vertical value than the left side of the line and vice versa 10 When lines are parallel, the gradients are equal. You check the gradients of the two lines, that is, the value of m
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